Perhaps you should try some spelling variations:
trinh vat » trinh van, trinh luat, sinh vat
hang cong » dang cong, hang nong, bang cong
hien anh » hien hanh, thien anh, dien anh
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, tinh gia

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