Perhaps you should try some spelling variations:
luan phung » luan phuong, luan chung, luan phong
chieu xanh » chieu sach, chieu sang, chieu tinh
phung cong » nhung cong, phong cong, nhung chong
hieu xanh » hieu manh, hieu nganh, dieu hanh
tang luan » dung luan
anh tang » anh bang, anh dang, anh nang
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cau » toan cau, phan cau, than cap

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 xanh) OR (chieu xanh)) - anh tang luan phung cong tac than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) OR (chieu xanh)) - anh tang luan phung cong tac than cau*".