Perhaps you should try some spelling variations:
rand » brand, hand, sand
grand » gbrand, ghand, gsand, brand, irand, grawd, grayd
band » bank
bond » bonds
grant » grants, irant, grawt, grayt
grains » brains, gbrains, gmains, ggains
grain » brain, gbrain, gmain, ggain
grained » brained, gained, trained, strained, gbrained, gmained, ggained
grawe » grade, grace, graw
gran » iran, graw, gray
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 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 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 grow)) or gran) or rain)) counterinsurgency study ;*.