Perhaps you should try some spelling variations:
tdanh trung » thanh trung, thanh tung, dang trung
danh trung » dang trung, dinh trung, manh trung
nhung cong » dung cong, thong cong, hang cong
hoc chinh » hoan chinh, hoc sinh, hoc kinh
cua nhung » va nhung
cong san » cong tac
san van » tan van, luan van, tran van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chinh sach - ((danh trung) or (tdanh trung)) cua nhung cong san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chinh sach - ((danh trung) OR (tdanh trung)) cua nhung cong san van ban.
• Adding a wildcard symbol may retrieve word variants: hoc chinh sach - ((danh trung) or (tdanh trung)) cua nhung cong san van ban*.