Perhaps you should try some spelling variations:
grant » grants, grandt, irant, grayt
grayt » gray, graft
band » bank
bond » bonds
graw » raw, draw, grew
grawt » rawt, drawt, grewt, graft, grawe
grain » brain, gbrain, gmain, ggain
tmained » trained, remained, attained
grave » gravel, grade
grace » grade, race
gran » grand, 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: (((((grant OR grayt) OR hard) OR (had OR land)) OR (band OR bond)) OR ((((((graw OR grawt) OR (grain OR tmained)) 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: "(((((grant OR grayt) or hard) or (had or land)) or (band or bond)) or ((((((graw or grawt) or (grain or tmained)) or iranttd) or ((grave or grace) or grow)) or gran) or rain)) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: (((((grant OR grayt) or hard) or (had or land)) or (band or bond)) or ((((((graw or grawt) or (grain or tmained)) or iranttd) or ((grave or grace) or grow)) or gran) or rain)) counterinsurgency study ;*.