Huấn luyện viên nói với cầu thủ.

Because Vietnamese writing normally separates syllables, not necessarily whole words the way English does.

So huấn luyện viên is usually treated as one compound noun meaning coach / trainer, even though it is written as three syllables:

• huấn
• luyện
• viên

This is very common in Vietnamese, so learners should not assume that each space marks a completely separate English-style word.

The parts help show how the word is built:

• huấn luyện = to train / training / coaching
• viên = a common element used in words for a person associated with a role or activity

So huấn luyện viên literally has the idea of a training person, and naturally means coach or trainer.

In practice, it is best to learn huấn luyện viên as one vocabulary item.

Cầu thủ means player in a sports sense.

So it refers to:

• a football/soccer player
• a team player
• an athlete in a sport

It does not usually mean just any kind of player in English, such as:

• a game player
• a music player
• a person who plays around romantically

In many contexts, especially sports news, cầu thủ often strongly suggests a football/soccer player, but the exact sport depends on context.

In this sentence, với marks the person being spoken to.

So:

• nói với ai = speak/talk to someone

That makes Huấn luyện viên nói với cầu thủ literally close to:

• Coach speaks to player

For an English speaker, với here works a bit like to in speak to.

Usually, not if you mean the coach speaks to the player.

With nói, Vietnamese normally uses với when the next noun is the listener:

• nói với cầu thủ = speak to the player

Without với, the sentence sounds unnatural or incomplete for that meaning.

However, nói can appear without với in other structures, especially when what follows is the content of the speech rather than the listener.

For example, the pattern can be:

• nói rằng... = say that...
• nói một câu = say a sentence / say something

So in your sentence, với is the natural choice.

It can match different English verbs depending on the structure.

In this sentence, nói với cầu thủ is most naturally:

• speak to the player
• talk to the player

If the sentence included the actual words spoken, nói might be translated as say.

Tell is sometimes possible in English translations, but Vietnamese often uses different patterns when the meaning is strongly tell someone to do something or instruct someone, for example with bảo.

So here, talk/speak to is the safest and most natural understanding.

The order is very straightforward:

• Huấn luyện viên = subject
• nói = verb
• với cầu thủ = prepositional phrase meaning to the player

So the structure is:

Subject + Verb + với + Person

Literally:

• coach + speak + to + player

That is one reason this sentence feels fairly easy for English speakers.

No, not by itself.

Vietnamese often does not mark tense directly the way English does. A sentence like this can be understood from context as:

• The coach talks to the player
• The coach is talking to the player
• The coach talked to the player

If you want to make time clearer, Vietnamese often adds words such as:

• đã = past
• đang = ongoing / progressive
• sẽ = future

For example:

• Huấn luyện viên đã nói với cầu thủ. = The coach spoke to the player.
• Huấn luyện viên đang nói với cầu thủ. = The coach is talking to the player.
• Huấn luyện viên sẽ nói với cầu thủ. = The coach will speak to the player.

Vietnamese does not use articles like a, an, and the the way English does.

So:

• huấn luyện viên can mean a coach, the coach, or just coach
• cầu thủ can mean a player, the player, or just player

The listener understands which one is meant from context.

That is why a short Vietnamese sentence can look more general than its English translation, even when the meaning is actually clear in conversation.

Not explicitly.

By itself, this sentence does not clearly mark whether there is:

• one coach or more than one
• one player or more than one

In many situations, people will understand it as singular because of the context or because that is the most natural reading.

If Vietnamese wants to mark plural more clearly, it can use words like:

• các
• những

For example:

• Các huấn luyện viên nói với các cầu thủ. = The coaches talk to the players.

Yes.

• nói với = speak/say to someone
• nói chuyện với = talk/chat/have a conversation with someone

So nói với can sound a bit more one-directional: the coach addresses the player.

But nói chuyện với suggests a fuller conversation.

Compare:

• Huấn luyện viên nói với cầu thủ. = The coach speaks to the player.
• Huấn luyện viên nói chuyện với cầu thủ. = The coach talks/chats with the player.

In your sentence, nói với is perfectly normal and natural.