Perhaps you should try some spelling variations:
"experimental yield" » "experiments field", "experimental time", "experimental vital"
"experimental field" » "experimental fluid", "experimental facts"
"experimental film" » "experimental films", "experimental fluid", "experimental facts"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("experimental film") OR ((("experimental field") OR ("experimental yield")))).
• Removing quotes may allow a broader search: (( experimental film ) or ((( experimental field ) or ( experimental yield )))).
• Adding a wildcard symbol may retrieve word variants: (("experimental film") or ((("experimental field") or ("experimental yield"))))*.