find /dir -name "*.gz" -exclude_from skip_files

find /dir -name "*.gz" $(printf "! -name %s " $(cat skip_files))

find /dir -name "*.gz" ! -name first_skip ! -name second_skip .... etc

find /dir -name "*.gz" | grep -vFf skip_files

find /dir ( -name "*.gz" ! -name skip_file1 ! -name skip_file2 ...so on )

find /var/www/test/ -type f ( -iname "*.*" ! -iname  "*.php" ! -iname "*.jpg" ! -iname "*.png"  )

find /dir -name "*.pdf" ! -name 070[3-7].pdf