Perhaps you should try some spelling variations:
rand » brand, band, sand
grandk » gbrandk, gbandk, gsandk, grande, brandk, irandk, grawdk, graydk
grand » gbrand, gband, gsand, brand, irand, grawd, grayd
granddk » gbranddk, gbanddk, gsanddk, branddk, iranddk, grawddk, grayddk
iirand » iibrand, iiband, iisand
hand » band
gran » iran, graw, gray
grant » irant, grawt, grayt, grants
grain » brain, rain
brained » trained, grained, drained

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((rand or ((hand or hard) or had)) or (bank or land)) or (((((grandk OR grand) or granddk) or (gran or grain)) or ((iirand or iggbandd) or (brained or gained))) or grant)) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((rand OR ((hand OR hard) OR had)) OR (bank OR land)) OR (((((grandk OR grand) OR granddk) OR (gran OR grain)) OR ((iirand OR iggbandd) OR (brained OR gained))) OR grant)) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((rand or ((hand or hard) or had)) or (bank or land)) or (((((grandk OR grand) or granddk) or (gran or grain)) or ((iirand or iggbandd) or (brained or gained))) or grant)) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: (((rand or ((hand or hard) or had)) or (bank or land)) or (((((grandk OR grand) or granddk) or (gran or grain)) or ((iirand or iggbandd) or (brained or gained))) or grant)) counterinsurgency study ;*.