Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
thang va » hang va, trang va, thong va
cong tan » cong tac, cong san, cong thanh
thai cao » thoai cac, thuat cao, toan cao
tang va » trang va, tang van, tang vat
tai cao » tao cao, tai sao, tai cac

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 sach - anh ((tang va) or (thang va)) nhung cong tan ((thai cao) OR (tai cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - anh ((tang va) OR (thang va)) nhung cong tan ((thai cao) OR (tai cao))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - anh ((tang va) or (thang va)) nhung cong tan ((thai cao) OR (tai cao))*".