Did Research or Made Research?

If you are using "research" as a noun, you would say doing "research" or do "research". But "research" is also a verb. So you can either say "I am going to do research on the causes of the civil war." Or you can just say, "I am going to research the causes of the civil war."

Did a research meaning?

transitive verb. 1 : to search or investigate exhaustively research a problem. 2 : to do research for research a book.

Can research be plural?

Unlike data, research should always be used as a mass noun, and its verb must be singular. Some writers attempt to force research to take a plural form (researches); however, this usage is incredibly rare, and it will almost certainly trouble a reviewer.