Perhaps you should try some spelling variations:
rand » brand, hand, sand
grand » gbrand, ghand, gsand, brand, graind, irand, grawd
rank » frank, bank
ranks » franks, banks
iranktd » ifranktd, ibanktd
band » bank
bond » bonds
ghani » ghana
grained » gained, trained, strained
grad » grid, graw, gray
grade » gride, grawe, graye, trade
gran » grain, iran, graw
grant » graint, irant, grawt, grants
graint » geraint, grain, grains

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 (rank OR ranks)) OR hard) OR (had OR land)) OR (band OR bond)) OR ((((((grand OR ghani) OR grained) OR iranktd) OR (grad OR grade)) OR gran) OR (graint OR grant))) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((rand or (rank or ranks)) or hard) or (had or land)) or (band or bond)) or ((((((grand or ghani) or grained) or iranktd) or (grad or grade)) or gran) or (graint OR grant))) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: (((((rand or (rank or ranks)) or hard) or (had or land)) or (band or bond)) or ((((((grand or ghani) or grained) or iranktd) or (grad or grade)) or gran) or (graint OR grant))) counterinsurgency study ;*.