Perhaps you should try some spelling variations:
thanh chuong » thanh huong, thanh cong, nhanh chong
chuong dai » huong dan, truong dai, huong doi
tuong cong » truong cong, trong cong, tong cong
hoc thieu » toc thieu, hoc hien
dai tuong » dai cuong, doi tuong, dai duong
van thanh » ban thanh, van tuan
ho chieu » theo chieu, doi chieu, mot chieu
van toan » van tuan, van tan, manh toan

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 (hoc thieu)) sach - thanh chuong dai tuong cong ((van toan) OR (van thanh)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - thanh chuong dai tuong cong ((van toan) OR (van thanh)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc thieu)) sach - thanh chuong dai tuong cong ((van toan) OR (van thanh)) cao".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) sach - thanh chuong dai tuong cong ((van toan) OR (van thanh)) cao*.