Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
khoan cam » khoa cam, khoan va, phan cam
cua tong » cua cong, cua nong, cua song
cua dong » chua dong, cua cong, cua dang
cong tan » cong tac, cong san, cong thanh
khan cap » khan ap, than cap, phan 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 - thanh tuong ((cua tong) OR (cua dong)) cong tan ((khan cap) or (khoan cam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh tuong ((cua tong) OR (cua dong)) cong tan ((khan cap) OR (khoan cam)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - thanh tuong ((cua tong) OR (cua dong)) cong tan ((khan cap) or (khoan cam))".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh tuong ((cua tong) OR (cua dong)) cong tan ((khan cap) or (khoan cam))*.