Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung thanh » truong thanh
thanh nhung » thanh hung, hanh nhung, tranh nhung
nhung cong » dung cong, thong cong, hang cong
phuong cau » phuong cham, phuong cach, thuong chau
doi chieu » doc hieu, doi chi, mot chieu
huong cau » thuong chau, huong dan, huong cua
ho chieu » theo chieu, hoc thieu, mot chieu
cong ban » cong bang, cong san, cong tan

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

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