Perhaps you should try some spelling variations:
grand » grant, brand, grantd, irand, grayd
band » bank
bond » bonds
graw » raw, draw, grew
grawt » rawt, drawt, grewt, grant, graft, grawe
grain » brain, gbrain, gmain, ggain
ggain » gain, again
grave » gravel, grade
grace » grade, race
gran » grant, iran, gray
trained » tbrained, tmained, tgained
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: ((((grand OR hard) OR (had OR land)) OR (band OR bond)) OR ((((((graw OR grawt) OR ((grain OR ggain) OR trained)) OR iranttd) OR ((grave OR grace) OR grow)) OR gran) OR rain)) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((grand or hard) or (had or land)) or (band or bond)) or ((((((graw or grawt) or ((grain OR ggain) or trained)) or iranttd) or ((grave or grace) or grow)) or gran) or rain)) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: ((((grand or hard) or (had or land)) or (band or bond)) or ((((((graw or grawt) or ((grain OR ggain) or trained)) or iranttd) or ((grave or grace) or grow)) or gran) or rain)) counterinsurgency study ;*.