Perhaps you should try some spelling variations:
"function spaces using tools" » "function systems using tools", "function space using tools", "function gases using tools", "function paper using tools"
"function system a tools" » "function systems a tools", "fusion system a tools", "function systems _ tools", "function system a tool", "function system _ tools"
"function system _ tool" » "function systems _ tool", "fusion system _ tool"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("function spaces using tools") or ((("function system a tools") or ("function system _ tool"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("function spaces using tools") OR ((("function system a tools") OR ("function system _ tool")))).
• Removing quotes may allow a broader search: (( function spaces using tools ) or ((( function system a tools ) or ( function system _ tool )))).
• Adding a wildcard symbol may retrieve word variants: (("function spaces using tools") or ((("function system a tools") or ("function system _ tool"))))*.