If you enclose a regex in parentheses ()
whatever is enclosed can be used in a search and replace by a number that is indexed starting with 1.
So for example
\section{\sc Research Interests}
can be found with the regex
\\section\{\\sc (.*?)\}
and replaced with
\section{\normalfont \textsc{Research Interests}}
by using the regex replace pattern
\section{\\normalfont \\textsc{$1}}