Perhaps you should try some spelling variations:
duong trong » dung trong
thanh tung » thanh cong
mot chieu » ho chieu
doi chieu » doc hieu, doi chi, ho chieu
trong ban » trong san, trong tan, trong quan
va duong » van duong, va tuong, va huong
than cap » khan cap, thanh lap, thanh cac
toan cau » toan cao, toan ban, toan tap
tung va » trung va, tuong va, dung va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (doi chieu)) sach - thanh tung va duong trong ban ((than cap) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (doi chieu)) sach - thanh tung va duong trong ban ((than cap) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (doi chieu)) sach - thanh tung va duong trong ban ((than cap) or (toan cau))*.