Perhaps you should try some spelling variations:
khien dong » nhiet dong, dien dong, bien dong
thanh tinh » thanh binh, nhanh tinh, hanh trinh
hoc khien » hoc hien, hoc nghien, hoc thieu
han trong » hanh trong, nhan trong, phan trong
trong san » trong cac, cong san, dong san
than cap » khan cap, thanh lap, thanh cac
phan tap » phan lap, han tap, pha tap
cua han » cua hang, cua nhan, cua phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc khien dong - ((thanh tinh) OR (than kinh)) cua han trong san ((than cap) or (phan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc khien dong - ((thanh tinh) OR (than kinh)) cua han trong san ((than cap) OR (phan tap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc khien dong - ((thanh tinh) OR (than kinh)) cua han trong san ((than cap) or (phan tap))*".