Here's a breakdown of the word:
* ကျေးဇူး (kyae zu) means "gratitude" or "thankfulness"
* တင် (tin) means "to put" or "to give"
* ပါ (pa) is a polite particle, similar to "please" or "you" in English
* တယ် (de) is a grammatical particle that indicates the verb is in the past tense
You can also use the more casual "ကျေးဇူး (kyae zu)" by itself, especially among friends or family.