Perhaps you should try some spelling variations:
rand » brand, hand, sand
grand » gbrand, ghand, gsand, grant, brand, grantd, irand, grayd
grank » grant, frank, rank, grantk, irank, grayk
grade » trade
gran » grant, iran, gray
graw » grow, raw, draw
bgain » gain, brain, again
rain » brain, main, gain
grain » gbrain, gmain, ggain, brain
ggain » gain, again

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