Perhaps you should try some spelling variations:
dung phuong » dung thuong, bang phuong, dung chung
hieu lang » chieu sang, hieu quang, nhieu tang
hanh luan » khanh luan, hang luan, hanh luat
xuan nhan » xuan thanh, xuan toan, van nhan
doc hieu » toc thieu, hoc thieu, hoc hien
van dung » van dong, xay dung, tin dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu lang - hanh luan van dung phuong hoang ((xuan nhan) or (quang nam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu lang - hanh luan van dung phuong hoang ((xuan nhan) OR (quang nam)).
• Adding a wildcard symbol may retrieve word variants: doc hieu lang - hanh luan van dung phuong hoang ((xuan nhan) or (quang nam))*.