Perhaps you should try some spelling variations:
sand » stand, san
hand » hard
band » bond
grants » migrants, grantts, grandts, irants
grassed » grasses, grasped, harassed
granddt » grantddt, grandddt, iranddt
gran » grant, grand, iran
grain » ggain, grail
brain » bgain, brail
rain » 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: ((((sand OR hand) OR (had OR land)) OR ((band OR bank) OR bonds)) OR ((((((grants OR granddt) OR frank) OR (grawddtd OR grassed)) OR raw) OR gran) OR (((grain OR brain) OR rain) OR main))) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((sand or hand) or (had or land)) or ((band or bank) or bonds)) or ((((((grants or granddt) or frank) or (grawddtd or grassed)) or raw) or gran) or (((grain OR brain) or rain) or main))) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: ((((sand or hand) or (had or land)) or ((band or bank) or bonds)) or ((((((grants or granddt) or frank) or (grawddtd or grassed)) or raw) or gran) or (((grain OR brain) or rain) or main))) counterinsurgency study ;*.