Perhaps you should try some spelling variations:
rand » brand, grand, band
grandk » gbrandk, ggrandk, gbandk, grand, granddk, irandk, grawdk
grande » gbrande, ggrande, gbande, grade, grand, grandde, irande, grawde
hand » band, hard
grayd » grand, gray
grawde » grade, grawe
gran » grand, iran, graw
grant » grandt, irant, grawt, grants
grain » brain, rain
grad » grade, grand, grid
grawt » graw, graft, grawe
irant » iran, irani, brant

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 had)) or (bank or land)) or ((((grandk or ((grande or grayd) or grawde)) or (gran or grain)) or (grayd or (grayd or grad))) or ((grant OR grawt) or irant))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((rand OR (hand OR had)) OR (bank OR land)) OR ((((grandk OR ((grande OR grayd) OR grawde)) OR (gran OR grain)) OR (grayd OR (grayd OR grad))) OR ((grant OR grawt) OR irant))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((rand or (hand or had)) or (bank or land)) or ((((grandk or ((grande or grayd) or grawde)) or (gran or grain)) or (grayd or (grayd or grad))) or ((grant OR grawt) or irant))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: (((rand or (hand or had)) or (bank or land)) or ((((grandk or ((grande or grayd) or grawde)) or (gran or grain)) or (grayd or (grayd or grad))) or ((grant OR grawt) or irant))) counterinsurgency study ;*.