Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
dung cong » dung trong
thanh cau » thanh chau, nhanh cau, thanh ca
thanh mau » hanh mau, thanh san, thanh hai
ho chieu » theo chieu, hoc thieu, doi chieu
tung vat » tang vat, tung va, luong vat
dung vat » dung va, dong vat, dung dat
cong san » cong tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - thanh ((tung vat) OR (dung vat)) dung cong san ((thanh cau) or (thanh mau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh ((tung vat) OR (dung vat)) dung cong san ((thanh cau) OR (thanh mau))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - thanh ((tung vat) OR (dung vat)) dung cong san ((thanh cau) or (thanh mau))*".