Formula to count wild card text in one column that is less than 90 days old

I am trying to count the items in one column that may include any words from a list of a few key words. Example includes nice, good, great, or excellent. I am looking for a sum total of any occurrences of these words.

In addition to these criteria, I only want to count these words if an associated date from the same row in another column is less than 90 days.

=SUMPRODUCT(--($C$2:$C$50000>TODAY()-90),--ISNUMBER(SEARCH("nice",$F$2:$F$50000)),--ISNUMBER(SEARCH("good",$F$2:$F$50000)),--ISNUMBER(SEARCH("great",$F$2:$F$50000)),--ISNUMBER(SEARCH("excellent",$F$2:$F$50000)))

If I only use 1 wildcard word, the formula appears to work. If I add multiple words, it does not. It returns zero.
=SUMPRODUCT(--($C$2:$C$50000>TODAY()-90),--ISNUMBER(SEARCH("good",$F$2:$F$50000))

I cannot figure out what is wrong with the above formula. Any help would be greatly appreciated!