Perhaps you should try some spelling variations:
rank » ranks, frank, bank
grank » granks, gfrank, gbank, frank, graink, irank, grawk
ffranks » ffrankss, fffranks, ffbanks
sand » stand, san, hand
band » bank, bond
grantk » grants, grantsk, graintk, irantk, grawtk
grant » grants, graint, irant, grawt
irani » iran, iraqi, rani
gran » grain, iran, graw
grandt » graindt, irandt, grawdt, brandt
grande » grainde, irande, grawde, grade, brande
grand » graind, irand, grawd, brand

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((rank or (sand or (hard or had))) or (band or land)) or (((((grank or ((grantk OR graintk) or (grant or irani))) or gran) or ffranks) or ((grandt or grande) or grand)) or ghana)) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((rank OR (sand OR (hard OR had))) OR (band OR land)) OR (((((grank OR ((grantk OR graintk) OR (grant OR irani))) OR gran) OR ffranks) OR ((grandt OR grande) OR grand)) OR ghana)) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((rank or (sand or (hard or had))) or (band or land)) or (((((grank or ((grantk OR graintk) or (grant or irani))) or gran) or ffranks) or ((grandt or grande) or grand)) or ghana)) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: (((rank or (sand or (hard or had))) or (band or land)) or (((((grank or ((grantk OR graintk) or (grant or irani))) or gran) or ffranks) or ((grandt or grande) or grand)) or ghana)) counterinsurgency study ;*.