Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
anh hang » anh hoang, anh bang, anh dang
anh hung » anh huong, manh hung, anh dung
cong tac » cong ty
tac luan » tac quan, tao luan, tang luan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - ((anh hang) OR (anh hung)) cua nhung cong tac luan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - ((anh hang) OR (anh hung)) cua nhung cong tac luan van".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((anh hang) OR (anh hung)) cua nhung cong tac luan van*.