Perhaps you should try some spelling variations:
tdang trung » tieng trung, quang trung, dung trung
dang trung » dung trung, dong trung, quang trung
nhung cong » dung cong, thong cong, hang cong
hoc chinh » hoan chinh, hoc sinh, hoc kinh
cua nhung » va nhung
cong luan » tong luan, cong tuan, dong luan

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 - ((dang trung) or (tdang trung)) cua nhung cong luan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chinh sach - ((dang trung) OR (tdang trung)) cua nhung cong luan van ban.
• Adding a wildcard symbol may retrieve word variants: hoc chinh sach - ((dang trung) or (tdang trung)) cua nhung cong luan van ban*.