Perhaps you should try some spelling variations:
luan phuong » lan phuong, quang phuong, doan phuong
phuong cong » phuong dong, phong cong, phung cong
hieu lang » chieu sang, hieu quang, nhieu tang
hanh dong » anh dong, ha dong
anh dung » anh dong, anh huong, sach dung
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cau » toan cao, toan ban, toan tap
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 - ((hanh dong) OR (anh dung)) luan phuong cong san toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - ((hanh dong) OR (anh dung)) luan phuong cong san toan cau".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((hanh dong) OR (anh dung)) luan phuong cong san toan cau*.