Perhaps you should try some spelling variations:
grand » grant, brand
irand » brand, iran, rand
band » bank
bond » bonds
graw » draw, grew
grat » great, grant, graft
grain » brain, gbrain, ggain, grail
remained » remains, remain
grave » gravel, grade, grace
race » rate, face, rice
gray » ray
rain » brain, gain, rail

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 irand) OR hard) OR (had OR land)) OR (band OR bond)) OR ((((((graw OR (grat OR raw)) OR (grain OR remained)) OR iranttd) OR ((grave OR race) OR grow)) OR gray) OR (rain OR main))) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((grand or irand) or hard) or (had or land)) or (band or bond)) or ((((((graw or (grat or raw)) or (grain or remained)) or iranttd) or ((grave or race) or grow)) or gray) or (rain OR main))) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: (((((grand or irand) or hard) or (had or land)) or (band or bond)) or ((((((graw or (grat or raw)) or (grain or remained)) or iranttd) or ((grave or race) or grow)) or gray) or (rain OR main))) counterinsurgency study ;*.