Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
tranh cua » doanh cua, manh cua
trinh cua » tinh cua, trinh luat, trinh quan
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sang - hanh ((tranh cua) or (trinh cua)) dung ((cong tan) OR (cong san)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - hanh ((tranh cua) OR (trinh cua)) dung ((cong tan) OR (cong san)) toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sang - hanh ((tranh cua) or (trinh cua)) dung ((cong tan) OR (cong san)) toan ban*".