Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
theo chieu » ho chieu, theo chu, thi chieu
tanh dung » thanh dung, tinh dung, manh dung
cua nhung » va nhung
anh dung » anh dong, anh huong, sach dung
cong van » cong vang, cong san, song van
van than » van thanh, van thang, van tuan
than cao » toan cao, thai cao, than cap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo tieu)) sach - ((anh dung) OR (tanh dung)) cua nhung cong van than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (theo tieu)) sach - ((anh dung) or (tanh dung)) cua nhung cong van than cao~".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (theo tieu)) sach - ((anh dung) or (tanh dung)) cua nhung cong van than cao*.