Policie našla tašku bez dokladů.

Because policie is a singular feminine noun in Czech.

So the past tense verb has to agree with it:

• policie našla = the police found
• not policie našli

This is different from English, where the police is grammatically plural. In Czech, policie behaves like a normal singular noun.

It can mean either, depending on context.

In a sentence like Policie našla tašku bez dokladů, it usually means the police in the general sense: police officers / the police force found the bag.

Grammatically, though, it is still treated as a singular feminine noun.

Because it is the direct object of the verb našla.

The verb najít / našla takes an object in the accusative case.
So:

• nominative: taška = a bag
• accusative: tašku = a bag, as the thing that was found

So:

• Policie našla tašku. = The police found a bag.

Because the preposition bez always takes the genitive case.

The basic noun is:

• doklady = documents / ID papers

After bez, it becomes:

• bez dokladů = without documents

So this is a very common pattern:

• bez peněz = without money
• bez problémů = without problems
• bez dokladů = without documents

Doklady usually means documents, especially personal documents, such as:

• ID card
• passport
• driver’s license
• other official papers

In this sentence, taška bez dokladů most naturally means a bag with no identification documents inside.

Depending on context, doklad can also mean:

• a document
• proof
• a receipt in some situations

But here documents / ID papers is the most likely meaning.

Yes, singular is possible in other contexts, but plural sounds more natural here.

• bez dokladu = without a document
• bez dokladů = without documents

People often carry several documents, so Czech commonly uses the plural here. It suggests there were no identifying papers in the bag.

The dictionary form is najít, which means to find.

Našla is:

• past tense
• feminine singular

Some forms of najít are:

• najít = to find
• našel = he found
• našla = she/it found
• našli = they found / masculine plural people found
• našlo = it found

In this sentence, našla agrees with policie, which is feminine singular.

Yes. Najít is perfective.

That means it describes a completed result: the finding happened successfully.

So Policie našla tašku means the police did find the bag, not just that they were looking for it or were in the process of finding it.

The imperfective partner is usually nacházet / nacházet in some contexts, or more commonly hledat means to look for, which is different:

• Policie hledala tašku. = The police were looking for the bag.
• Policie našla tašku. = The police found the bag.

Because Czech has no articles.

So Policie našla tašku bez dokladů can mean:

• The police found a bag without documents
• sometimes, depending on context, The police found the bag without documents

English forces you to choose a or the, but Czech usually leaves that to context.

No, Czech word order is fairly flexible.

Policie našla tašku bez dokladů is the most neutral order. But other word orders are possible, for example:

• Tašku bez dokladů našla policie.
  This puts more focus on the bag.

• Bez dokladů našla policie tašku.
  This sounds more marked and emphasizes without documents.

The endings show the grammatical roles, so Czech does not rely on word order as heavily as English does.

A simple pronunciation guide:

• Policie ≈ PO-li-tsi-ye
• našla ≈ NASH-la
• tašku ≈ TASH-koo
• bez ≈ bes
• dokladů ≈ DO-kla-doo

A rough full pronunciation: PO-li-tsi-ye NASH-la TASH-koo bes DO-kla-doo

Also remember:

• Czech stress is usually on the first syllable of each word.
• š sounds like sh in shoe.
• c sounds like ts.
• ů is pronounced like a long oo.

Normally, no. Standard Czech treats policie as a singular noun, so it takes singular agreement.

So standard Czech is:

• Policie našla...

Not:

• Policie našli...

If you want a clearly plural expression, you would use a different noun, for example:

• policisté našli... = the police officers found...

Here policisté is plural, so the verb is plural too.