Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
nuoc cac » duoc cac, luoc cac, nuoc cap
so dang » su dang, so dan, so dung
dang ki » dang ky, dang khoi, dang khai
ki nang » ky nang
van cac » van hac, van cau, van bac
dan den » ban den, van den, dan dung
dan di » danh di, dan da, dan de
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: so dang ki nang x hoi. hieu van cac nuoc cac ((dan di) or (dan den)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so dang ki nang x hoi. hieu van cac nuoc cac ((dan di) OR (dan den)) cua te*.