Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
luan phuong » lan phuong, quang phuong, doan phuong
hieu lang » chieu sang, hieu quang, nhieu tang
bang luan » tang luan, hang luan, dung luan
anh bang » anh hoang, anh quang, tinh bang
cong tan » cong tac, cong san, cong thanh
toan tai » toan tap, doanh tai, toan cao
toan ban » van ban
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - anh bang luan phuong cong tan ((toan tai) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - anh bang luan phuong cong tan ((toan tai) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - anh bang luan phuong cong tan ((toan tai) or (toan ban))*.