Perhaps you should try some spelling variations:
sand » stand, san, hand
rank » bank
ranks » banks
frank » fbank
frans » franz, trans, fran
band » bank, bond
grantd » granted, grants, grant, granttd, grandtd, irantd
irant » grant, iran, irani
irand » brand, iran, grand
igrand » grand, igrantd, igrandd, iirand
graind » grains, grand, gmaind, ggaind, graild
grained » gained, trained, strained, gmained, ggained, grailed
gran » grant, grand, iran
grain » gmain, ggain, grail
rain » main, gain, rail
brain » bmain, bgain, brail

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((((((sand or (rank or ranks)) or (frank or frans)) or had) or land) or band) or ((((grantd or irant) or (irand or igrand)) or (graind or grained)) or (gran or ((grain OR rain) or brain)))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((((sand OR (rank OR ranks)) OR (frank OR frans)) OR had) OR land) OR band) OR ((((grantd OR irant) OR (irand OR igrand)) OR (graind OR grained)) OR (gran OR ((grain OR rain) OR brain)))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((sand or (rank or ranks)) or (frank or frans)) or had) or land) or band) or ((((grantd or irant) or (irand or igrand)) or (graind or grained)) or (gran or ((grain OR rain) or brain)))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: ((((((sand or (rank or ranks)) or (frank or frans)) or had) or land) or band) or ((((grantd or irant) or (irand or igrand)) or (graind or grained)) or (gran or ((grain OR rain) or brain)))) counterinsurgency study ;*.