At the end of day I came to dirty workaround 🙂 Will leave comment here, may be it will help to somebody.
I used | eval EEE=if(match(FFF,".*".SSS.".*"), 1,0) to indicate matches, but had to change SSS field wildcards, thankfully it was made by semimanual CSV. Match function uses regex, so I had to remove * wildcards before and especially after, replace all * by .* and shorten search words to exclude potential capital letters - like omcat or uery ). As you can see, solution is still case insensitive, so feel free to offer improvements.