Perhaps you should try some spelling variations:
rand » brand, hand, sand
grand » gbrand, ghand, gsand, brand, irand, grayd, trand
band » bank
bond » bonds
grant » grants, irant, grayt, trant
grains » brains, gbrains, gmains, ggains
grain » brain, gbrain, gmain, ggain
grained » brained, gained, trained, strained, gbrained, gmained, ggained
grawe » grade, grace, grave, rawe, drawe, grewe
graw » raw, draw, grew
gran » iran, gray, tran
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 hard) OR (had OR land)) OR (band OR bond)) OR ((((((grand OR (grant OR gradient)) OR ((grains OR grain) OR grained)) OR iranttd) OR ((grawe OR graw) OR grow)) OR gran) OR rain)) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((rand or hard) or (had or land)) or (band or bond)) or ((((((grand or (grant or gradient)) or ((grains or grain) or grained)) or iranttd) or ((grawe OR graw) or grow)) or gran) or rain)) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: ((((rand or hard) or (had or land)) or (band or bond)) or ((((((grand or (grant or gradient)) or ((grains or grain) or grained)) or iranttd) or ((grawe OR graw) or grow)) or gran) or rain)) counterinsurgency study ;*.