Perhaps you should try some spelling variations:
"experimental fields" » "experimental films", "experimental film", "experimental fires", "experimental fluids"
"experimental field" » "experimental fluid"
"experimental facts" » "experimental aspects", "experimental facilities", "experimental fluid"
"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 facts") OR ((("experimental fields") OR ("experimental yield")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"experimental field\") or (((\"experimental facts\") or (((\"experimental fields\") OR (\"experimental yield\"))))))".
• Removing quotes may allow a broader search: (( experimental field ) or ((( experimental facts ) or ((( experimental fields ) OR ( experimental yield )))))).
• Adding a wildcard symbol may retrieve word variants: (("experimental field") or ((("experimental facts") or ((("experimental fields") OR ("experimental yield"))))))*.