Perhaps you should try some spelling variations:
rand » brand, hand, sand
grand » gbrand, ghand, gsand, brand
bond » bonds
graw » raw, draw, grew
grant » grants
grain » brain, rain
graint » braint, raint, geraint, gradient
grains » brains, rains
brains » brain, trains, drains

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((rand or hard) or (had or land)) or (bank or bond)) or (((((grand or (gband or band)) or gsandtd) or (graw OR grow)) or (grant or grain)) or (graint or (grains or brains)))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((rand OR hard) OR (had OR land)) OR (bank OR bond)) OR (((((grand OR (gband OR band)) OR gsandtd) OR (graw OR grow)) OR (grant OR grain)) OR (graint OR (grains OR brains)))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((rand or hard) or (had or land)) or (bank or bond)) or (((((grand or (gband or band)) or gsandtd) or (graw OR grow)) or (grant or grain)) or (graint or (grains or brains)))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: ((((rand or hard) or (had or land)) or (bank or bond)) or (((((grand or (gband or band)) or gsandtd) or (graw OR grow)) or (grant or grain)) or (graint or (grains or brains)))) counterinsurgency study ;*.