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