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

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 field") OR ((("experimental fields") OR ("experimental yield")))).
• Removing quotes may allow a broader search: (( experimental field ) or ((( experimental fields ) or ( experimental yield )))).
• Adding a wildcard symbol may retrieve word variants: (("experimental field") or ((("experimental fields") or ("experimental yield"))))*.