Perhaps you should try some spelling variations:
dong hoang » hong hong
congo can » congo call, congo war, congo cuanza
dong cao » dong xiao, dan cao, dong nan
anh mine » anh minh, land mine, a mine
cong van » duong van, cong sun
wei anh » wei wang, wei yang
congo a » congo _, congo 1, congo 2

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((dong cao) or (dong hoang)) ya hua wei anh mine ((cong van) or (((congo can) OR (congo a)))) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong cao) OR (dong hoang)) ya hua wei anh mine ((cong van) OR (((congo can) OR (congo a)))) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong cao) or (dong hoang)) ya hua wei anh mine ((cong van) or (((congo can) OR (congo a)))) ;".
• Adding a wildcard symbol may retrieve word variants: ((dong cao) or (dong hoang)) ya hua wei anh mine ((cong van) or (((congo can) OR (congo a)))) ;*.