Perhaps you should try some spelling variations:
sand » san, hand
rank » frank, bank
ranks » franks, banks
iranktd » ifranktd, ibanktd
band » bank, bond
graind » grained, grain
grains » grain
grand » brand, graind, irand, grawd
gran » grain, iran, graw
grant » graint, irant, grawt, grants
graint » geraint, grain, gradient

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: ((((((sand OR stand) OR (rank OR ranks)) OR hard) OR (had OR land)) OR (band OR bonds)) OR ((((((graind OR grains) OR (graind OR grains)) OR iranktd) OR grand) OR gran) OR (graint OR grant))) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((sand OR stand) or (rank or ranks)) or hard) or (had or land)) or (band or bonds)) or ((((((graind or grains) or (graind or grains)) or iranktd) or grand) or gran) or (graint or grant))) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: ((((((sand OR stand) or (rank or ranks)) or hard) or (had or land)) or (band or bonds)) or ((((((graind or grains) or (graind or grains)) or iranktd) or grand) or gran) or (graint or grant))) counterinsurgency study ;*.