As FiberOptics has said, it really comes down to what ya doing.
If you need to just find if the words in the file then use $read(file,ntw,*word*)
If you need a total number of matches use filter -ff file nul *word* and then $filtered has the matches
If you need a list of matching lines use filter -fwc file @win *word* and then $filtered has the matches And @win holds the list (u need to make the window first window -h @win makes a nice hidden window
Heres one i sometimes need...
If you need a list of the matches AND the line numbers there on in the file then use filter -fwcn file @win *word*
This gives you the list of matching lines but at the start of each line is the linenumber its from in the file followed by a space. ie: <linenumber> <line in file>