text only: build a search on three y/n variables then change result for combination of returns

[futurejock]

how do I write 3 columns of "find text" arrays, which include phrases and singular words, which must be preserved or found exactly?

How do I return the search/sort so that
if A1=instance yes then "xxx", if no then test B1
if B1=instance yes then "xyz", if no then test C1
if C1=instance yes then "zzz", if no then stop
then run
if A1=yes and B1=yes, then "abc"
if A1=no and B1=yes, the "def"
etc.

---definition of match = any single instance or more of any item on a list
---definitition of qualifies for match = all letters of word in correct order, complete, and all words in correct order, select no partial match of a word, and no composite words in either direction
---qulaifier= disrespecting any case sensitivity (in either direction)),


A1
Data= strings of text, each cell is unique

B1
return=formula searches in column A for words or phrases

C, D, E
list(s)=unique words or phrases