Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
thanh hoa » thanh pho
trong ban » trong san, trong tan, trong quan
cua dung » cua dang, cua dong, qua dung
than cao » toan cao, thai cao, than sao
than cap » khan cap, thanh lap, thanh cac
hoa cua » hoa chat, hoa xuat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) or (chinh sach)) - thanh hoa cua dung trong ban ((than cao) OR (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (chinh sach)) - thanh hoa cua dung trong ban ((than cao) OR (than cap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (chinh sach)) - thanh hoa cua dung trong ban ((than cao) OR (than cap))*".