Perhaps you should try some spelling variations:
rand » brand, grand, rank
sand » stand, san
grank » grant, frank, grand
band » bond
ghand » ghana, grand, ghani
gpart » part, apart, ipart, gppart
hepart » depart, heppart
art » part
cheart » chepart, chart, cheat
heart » hepart, heat

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((((((rand OR hand) OR sand) OR (bank OR had)) OR land) OR bonds) OR ((grank OR (band OR ghand)) OR (gpart OR (((hepart OR art) OR gpart) OR (hard OR (cheart OR heart)))))) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((rand OR hand) or sand) or (bank or had)) or land) or bonds) or ((grank or (band or ghand)) or (gpart or (((hepart or art) or gpart) or (hard or (cheart or heart)))))) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: ((((((rand OR hand) or sand) or (bank or had)) or land) or bonds) or ((grank or (band or ghand)) or (gpart or (((hepart or art) or gpart) or (hard or (cheart or heart)))))) counterinsurgency study ;*.