Perhaps you should try some spelling variations:
rand » brand, hand, rank
grand » gbrand, ghand, grank, grant, brand
sand » stand, san, hand
grank » grant, frank, rank
grade » trade
tran » train, than, tan
trans » trains, thans, tans
gray » ray
graw » grow, raw, draw
bgain » brain, again, bain, bgains, bmain
gain » gains, main
rain » brain, main, rail
grain » gbrain, gmain, grail, brain

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 sand) OR (band OR bank)) OR (had OR land)) OR (bond OR bonds)) OR (((((grank OR grand) OR gbandtd) OR grade) OR (((tran OR trans) OR gray) OR graw)) OR (((bgain OR gain) OR rain) OR grain))) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((rand OR sand) or (band or bank)) or (had or land)) or (bond or bonds)) or (((((grank or grand) or gbandtd) or grade) or (((tran or trans) or gray) or graw)) or (((bgain or gain) or rain) or grain))) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: (((((rand OR sand) or (band or bank)) or (had or land)) or (bond or bonds)) or (((((grank or grand) or gbandtd) or grade) or (((tran or trans) or gray) or graw)) or (((bgain or gain) or rain) or grain))) counterinsurgency study ;*.