Perhaps you should try some spelling variations:
rand » brand, grand, hand
gray » graw
graytdtd » grawtdtd
irani » iran, iraqi, rani
gdrainfed » andrainfed, rainfed, drained
grained » gained, trained, strained, gtrained, grainfed, gdrained, brained, rained
rained » trained, rainfed, drained
gran » grant, grand, iran
grain » brain, rain
raint » rain, saint, rainy

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: ((((rand OR (band OR bond)) OR (had OR land)) OR (bank OR bonds)) OR ((((((gray OR irani) OR ((gdrainfed OR grained) OR rained)) OR graytdtd) OR grow) OR ((gran OR ray) OR grain)) OR raint)) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((rand or (band or bond)) or (had or land)) or (bank or bonds)) or ((((((gray or irani) or ((gdrainfed OR grained) or rained)) or graytdtd) or grow) or ((gran or ray) or grain)) or raint)) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: ((((rand or (band or bond)) or (had or land)) or (bank or bonds)) or ((((((gray or irani) or ((gdrainfed OR grained) or rained)) or graytdtd) or grow) or ((gran or ray) or grain)) or raint)) counterinsurgency study ;*.