Perhaps you should try some spelling variations:
rand » brand, hand, rank
irand » ibrand, ihand, irank, brand, iran, irani
grand » gbrand, ghand, grank, brand, graind, irand, grawd
band » bond
gran » grain, iran, graw
grant » graint, irant, grawt, grants
gfrank » frank
sand » stand, san, hand
ghad » ghada, gad, shad
grad » grade, grid, graw
chad » cham

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 bank) or band) or ((((((irand OR grand) or ((gran or gfrank) or gfrank)) or sand) or grant) or land) or ((((ghad or grad) or chad) or had) or hard))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((rand OR bank) OR band) OR ((((((irand OR grand) OR ((gran OR gfrank) OR gfrank)) OR sand) OR grant) OR land) OR ((((ghad OR grad) OR chad) OR had) OR hard))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((rand or bank) or band) or ((((((irand OR grand) or ((gran or gfrank) or gfrank)) or sand) or grant) or land) or ((((ghad or grad) or chad) or had) or hard))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: (((rand or bank) or band) or ((((((irand OR grand) or ((gran or gfrank) or gfrank)) or sand) or grant) or land) or ((((ghad or grad) or chad) or had) or hard))) counterinsurgency study ;*.