Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
dien sach » dien anh
kien sach » vien bach, kien mac, viet sach
cua nhung » va nhung
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((dien sach) or (kien sach)) - ((canh tranh) or (thanh trung)) cua nhung cong tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((dien sach) OR (kien sach)) - ((canh tranh) OR (thanh trung)) cua nhung cong tan toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((dien sach) or (kien sach)) - ((canh tranh) or (thanh trung)) cua nhung cong tan toan ban*.