Sam is a VORACIOUS eater of the food. Even though he REPLETES WITH food, he always searching for some more variety of stuff. His Interminable search about food, made him happy always.

please make corrections if any

He does not replete with food. It's not a verb.

https://www.merriam-webster.com/dictionary/replete

Sam is a voracious eater. Even though he is replete with food, he is always searching for more variety. His relentless search for food brings him happiness.

The sentence has been corrected for grammar and word choice.