find starting_folder -name “*” | grep -i file_name | xargs grep -i search_string

for example:

“find . -name “*” | grep -i hobba | xargs grep -i tito”

searches for the string “tito” inside all files whose name contains the word “hobba” inside the current folder.

Note that the “-i” parameter for the “grep” command makes the search case insensitive.