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