What does lee ma tha mean in Arabic?

"Lee ma tha" is not a valid phrase in Arabic. It is likely a misspelling or a combination of words that don't make sense together.

To help you better, please provide:

* The context of the phrase: Where did you hear or see it? Was it written or spoken?

* Any other information: Did you hear any other words around it? What was the topic of conversation?

With more information, I can help you understand what the intended meaning might be.