Kupac traži manje pakiranje kave.

Yes:

• Kupac = customer / buyer
• traži = is looking for / asks for / wants
• manje = smaller here
• pakiranje = package / pack / packaging
• kave = of coffee

So the structure is basically:

customer + seeks/asks for + smaller package + of coffee

Because kupac is the subject of the sentence, so it is in the nominative singular.

The dictionary form is also kupac.

If this noun were in another case, it would change, for example:

• nominative: kupac
• genitive: kupca
• accusative: kupca (because it is masculine animate)

So here kupac stays in the basic subject form.

Traži is the 3rd person singular present tense of tražiti.

That means it matches kupac = the customer / a customer.

A few present-tense forms are:

• ja tražim = I am looking for / I ask for
• ti tražiš = you are looking for
• on/ona traži = he/she is looking for
• oni traže = they are looking for

Croatian often does not need a subject pronoun, because the verb ending already gives person and number.

Good question. Here manje is the neuter singular comparative form of the adjective mali = small.

Comparative forms:

• masculine: manji
• feminine: manja
• neuter: manje

Since pakiranje is a neuter singular noun, the adjective must agree with it:

• manje pakiranje = a smaller package

It is true that manje can also mean less in other contexts, for example:

• manje kave = less coffee

So the form is the same, but the grammar and meaning depend on the sentence.

It describes the package, not the coffee.

So:

• manje pakiranje kave = a smaller package of coffee

This does not mean less coffee.

If you wanted to say The customer is looking for less coffee, you would say something like:

• Kupac traži manje kave.

So in your sentence, the idea is about package size.

Because pakiranje is a neuter singular noun, and in Croatian the nominative and accusative singular are often the same for neuter nouns.

Here pakiranje is the direct object, so it is in the accusative singular. But that accusative form looks exactly like the dictionary form:

• nominative: pakiranje
• accusative: pakiranje

So it has changed in function, but not in appearance.

Because Croatian often uses the genitive after nouns that express a container, amount, package, or type.

So:

• pakiranje kave = a package of coffee
• čaša vode = a glass of water
• vrećica šećera = a bag of sugar

The noun kava becomes kave in the genitive singular.

This is very common in Croatian.

It can mean both, depending on context.

Literally, pakiranje can mean packaging / packing, but in shopping and product contexts it often means:

• pack
• package
• package size

So manje pakiranje kave is most naturally understood as:

• a smaller pack of coffee
• a smaller package of coffee
• a smaller coffee package

This word order is the most neutral and natural one:

• Kupac traži manje pakiranje kave.

Croatian word order is fairly flexible, but changing it usually changes the emphasis, not the basic meaning.

For example, other orders may be possible in context, but this version is the normal one for a simple statement.

Also, Croatian often drops the subject if it is already clear:

• Traži manje pakiranje kave. = He/She is asking for a smaller package of coffee.

Because Croatian has no articles.

There is no direct equivalent of English a/an or the in ordinary Croatian grammar.

So kupac can mean:

• a customer
• the customer

and context tells you which one is meant.

The same is true for pakiranje:

• a package
• the package

English has to choose, but Croatian usually does not mark that explicitly.

A rough English-friendly pronunciation is:

KOO-pats TRA-zhee MA-nye pa-kee-RA-nye KAH-veh

A few useful sound notes:

• c = ts as in cats
• ž = the sound in measure
• j = y as in yes
• nj = a ny sound, similar to canyon

So:

• Kupac ≈ KOO-pats
• traži ≈ TRA-zhee
• manje ≈ MA-nye
• pakiranje ≈ pa-kee-RA-nye
• kave ≈ KAH-veh