Perhaps you should try some spelling variations:
rand » brand, band, hand
grand » gbrand, gband, ghand, grant, brand
grain » brain, rain
sand » stand, band, san
grad » grid, graw, gray
grade » gride, grawe, graye, trade
grawe » grace, graw, grave
irani » iran, iraqi, rani

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