Perhaps you should try some spelling variations:
nang cong » nang song, dang cong, bang cong
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
hien anh » hien hanh, thien anh, tien anh
dien anh » tieng anh, dien dan
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac
tinh va » tich va, trinh van, trinh vat
va nang » van nang, da nang, cam nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien anh) or (dien anh)) - hanh tinh va nang cong dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien anh) OR (dien anh)) - hanh tinh va nang cong dan than cap*.