For location:
* Là: This is the most common and general translation. It means "there" as in "the book is there" (Le livre est là).
* Là-bas: This means "over there" or "further away," implying a distance.
* Là-dessus: This means "on top of that" or "there on that."
For emphasis:
* Là-dedans: This means "in there," implying a specific location within something.
* Là-haut: This means "up there" or "above."
* Là-dessous: This means "under there" or "below."
For time:
* Là: This can also mean "then" or "at that time."
The best translation depends on the specific context of your sentence.