Perhaps you should try some spelling variations:
hang cong » dang cong, hang nong, 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 hang » van hang, va nang, va lang

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 hang cong dan than cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien anh) OR (dien anh)) - hanh tinh va hang cong dan than cap*".