What is the meaning of "Mas que nada"?
More context is needed. It could be "more than nothing" or "more than anything" depending on context (if the sentence were negative, etc.)
This from Wikipedia:
In Brazilian Portuguese slang, mas que nada (literally, "but, that [is] nothing") means "come on" or "no way". This is sometimes confused with the Latin-American Spanish más que nada (literally "better than nothing"), meaning "mainly" or "principally"; though in more literary Spanish, "mas que nada" (note the omission of the accent, which changes "más" (more) to "mas" (but)) would have the same literal meaning as the Portuguese.