Perhaps you should try some spelling variations:
rand » brand, hand, rank
grand » gbrand, ghand, grank, grant, brand, grantd, grawd, grayd
grank » grant, frank, rank, grantk, grawk, grayk
irans » trans, frans, irani
sand » stand, san, hand
band » bond
gran » grant, graw, gray
tran » train, trans, than
grain » brain, rain

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 ((graydttd or (grand OR grank)) or irans)) or had) or ((ranks or bank) or banks)) or sand) or land) or band) or ((iran or iron) or ((gran or tran) or grain))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((((rand OR ((graydttd OR (grand OR grank)) OR irans)) OR had) OR ((ranks OR bank) OR banks)) OR sand) OR land) OR band) OR ((iran OR iron) OR ((gran OR tran) OR grain))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((((rand or ((graydttd or (grand OR grank)) or irans)) or had) or ((ranks or bank) or banks)) or sand) or land) or band) or ((iran or iron) or ((gran or tran) or grain))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: (((((((rand or ((graydttd or (grand OR grank)) or irans)) or had) or ((ranks or bank) or banks)) or sand) or land) or band) or ((iran or iron) or ((gran or tran) or grain))) counterinsurgency study ;*.