Perhaps you should try some spelling variations:
rand » brand, sand, rank
grand » gbrand, gsand, grank, brand, graind, irand, grawd
grandtd » gbrandtd, gsandtd, granktd, brandtd, graindtd, irandtd, grawdtd
band » bank, bond
graink » grain
grawe » grade, graw, grave
grace » grade, race
gran » grain, iran, graw
grant » graint, irant, grawt, grants
grawt » graw, graft
graint » geraint, grain, gradient
grains » grain

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 (hand OR hard)) OR (had OR land)) OR (band OR bonds)) OR (((((grand OR graink) OR grandtd) OR (grawe OR grace)) OR (gran OR (grant OR grawt))) OR (graint OR grains))) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((rand or (hand or hard)) or (had or land)) or (band or bonds)) or (((((grand or graink) or grandtd) or (grawe or grace)) or (gran or (grant or grawt))) or (graint OR grains))) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: ((((rand or (hand or hard)) or (had or land)) or (band or bonds)) or (((((grand or graink) or grandtd) or (grawe or grace)) or (gran or (grant or grawt))) or (graint OR grains))) counterinsurgency study ;*.