Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
theo chieu » theo tieu, theo chu, thi chieu
duong cong » dung cong, luong cong, duong trong
tuong cua » truong cua, huong cua, thong cua
dong cong » dung cong, dang cong, cong cong
san thanh » ban thanh, van thanh, son thanh
thanh cau » thanh chau, thanh mau, nhanh cau
ho chieu » hoc thieu, doi chieu, mot chieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (theo chieu)) sach - thanh tuong cua ((dong cong) or (duong cong)) san thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sach - thanh tuong cua ((dong cong) OR (duong cong)) san thanh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) sach - thanh tuong cua ((dong cong) or (duong cong)) san thanh cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) sach - thanh tuong cua ((dong cong) or (duong cong)) san thanh cau*.