Perhaps you should try some spelling variations:
rand » brand, hand, sand
grand » gbrand, ghand, gsand, grant, brand
grandtd » gbrandtd, ghandtd, gsandtd, granttd, brandtd
band » bank
ggained » gained, grained, regained
gravel » travel
draw » draws, raw
bmain » main, brain, bain
grains » grain, gbrains, gmains, ggains
rain » brain, main, gain

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 grand) OR hard) OR (had OR land)) OR ((band OR bond) OR bonds)) OR (((((stand OR ggained) OR grandtd) OR gravel) OR (stand OR draw)) OR ((bmain OR grains) OR rain))) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((rand or grand) or hard) or (had or land)) or ((band OR bond) or bonds)) or (((((stand or ggained) or grandtd) or gravel) or (stand or draw)) or ((bmain or grains) or rain))) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: (((((rand or grand) or hard) or (had or land)) or ((band OR bond) or bonds)) or (((((stand or ggained) or grandtd) or gravel) or (stand or draw)) or ((bmain or grains) or rain))) counterinsurgency study ;*.