Moja sestra nigde ne može da nađe telefon.

Moja means my. It agrees with sestra in gender, number, and case.

• moja = feminine singular
• sestra = sister, feminine singular

So moja sestra means my sister.

In Serbian, possessive words like moj, tvoj, njegov, njen change form depending on the noun:

• moj brat = my brother
• moja sestra = my sister
• moje dete = my child

You can sometimes omit moja if the context already makes it clear whose sister you mean, but here it is explicitly stated.

Nigde means nowhere.

In Serbian, negative words like nigde usually appear together with a negative verb. This is called negative concord. So Serbian says, literally:

• nigde ne može = can nowhere / cannot find anywhere

This is normal Serbian grammar. English usually uses only one negative idea in the clause:

• She can’t find the phone anywhere
• or She can find the phone nowhere (less natural in everyday English)

But in Serbian, nigde and ne može naturally go together.

Other examples:

• Nikoga ne vidim. = I don’t see anyone.
• Ništa ne znam. = I don’t know anything.
• Nikad ne kasni. = He/She is never late.

This is a very common Serbian structure.

• može = can / is able to
• da nađe = to find / literally something like that she find

After modal verbs such as moći (can), Serbian often uses da + present tense instead of an infinitive.

So:

• može da nađe = can find

This is one of the most important Serbian patterns:

• Mogu da dođem. = I can come.
• Hoću da jedem. = I want to eat.
• Moram da idem. = I must go.

You may also sometimes see an infinitive after some verbs in more formal or regional usage, but da + present is extremely common and natural.

Naći is the dictionary form, meaning to find.

After da, Serbian normally uses a present-tense form, not the infinitive. The present-tense form here is nađe.

So:

• dictionary form: naći
• after da: da nađe

This comes from the verb naći, whose present forms are irregular:

• nađem
• nađeš
• nađe
• nađemo
• nađete
• nađu

In your sentence, the subject is moja sestra = she, so the correct form is nađe.

This is a very useful distinction:

• tražiti = to look for / search for
• naći = to find

So:

• Moja sestra traži telefon. = My sister is looking for the phone.
• Moja sestra ne može da nađe telefon. = My sister can’t find the phone.

The sentence is about the result: she is unable to locate it. That is why nađe from naći is used, not traži.

Yes, telefon is the direct object, so it is in the accusative case. But for many masculine inanimate nouns, the accusative singular looks the same as the nominative singular.

So:

• nominative: telefon
• accusative: telefon

That is why it appears unchanged.

Compare:

• Vidim telefon. = I see the phone.
• Imam telefon. = I have a phone.

But with masculine animate nouns, accusative usually changes:

• nominative: student
• accusative: studenta

And with many feminine nouns, accusative also changes:

• nominative: sestra
• accusative: sestru

The verb može is the 3rd person singular form of moći (to be able to / can).

The subject is moja sestra, which is singular, so the verb must also be singular.

Present tense of moći:

• mogu = I can
• možeš = you can
• može = he/she/it can
• možemo = we can
• možete = you plural/formal can
• mogu = they can

So moja sestra ... može means my sister ... can.

We understand it as she can because sestra is feminine, even though Serbian verbs in the present tense do not show gender.

In Serbian, ne is usually written separately from the verb:

• ne može = cannot
• ne znam = I don’t know
• ne vidi = he/she doesn’t see

This is the normal spelling.

A few forms are written together, such as:

• nemam = I don’t have
• nisam = I am not

But with može, it stays separate:

• ne može

So nigde ne može da nađe telefon is the correct standard form.

Yes, Serbian word order is flexible, but the original order is very natural.

Moja sestra nigde ne može da nađe telefon.

This order presents:

1. the subject: moja sestra
2. the negative adverb: nigde
3. the verb phrase: ne može da nađe
4. the object: telefon

You could change the order for emphasis, for example:

• Telefon moja sestra nigde ne može da nađe.
• Moja sestra telefon nigde ne može da nađe.

These are grammatically possible, but they sound more marked or emphatic. The original version is the most neutral and natural for everyday use.

Serbian has no articles like a or the.

So telefon can mean:

• a phone
• the phone

The exact meaning depends on context.

In this sentence, English will often translate it as the phone, because the situation usually suggests a specific phone that the sister is trying to find:

• My sister can’t find the phone anywhere.

But without context, Serbian itself does not explicitly mark that distinction.

In natural English, the best translation is usually:

• can’t find anywhere

Word-for-word, Serbian is closer to:

• nowhere cannot find

But that is just how Serbian negative grammar works. So when learning, it is best to think of:

• nigde ... ne ... = not ... anywhere / nowhere

Depending on context, this part could be translated as:

• can’t find anywhere
• is unable to find anywhere
• can’t find it anywhere

The most natural English version is usually My sister can’t find the phone anywhere.