Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tinh » nhanh tinh, than kinh, hanh trinh
thanh binh » thai binh, than kinh, tinh binh
tong cong » trong cong, cong cong, dung cong
ho chieu » theo chieu, hoc thieu, doi chieu
cua tong » cua cong, cua dong, cua nong
cong san » cong tac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - ((thanh tinh) OR (thanh binh)) cua tong cong san ((toan ban) OR (van ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - ((thanh tinh) OR (thanh binh)) cua tong cong san ((toan ban) or (van ban))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - ((thanh tinh) OR (thanh binh)) cua tong cong san ((toan ban) or (van ban))*.