Perhaps you should try some spelling variations:
luan phuong » lan phuong, quang phuong, doan phuong
theo chieu » theo tieu, ho chieu, theo chu
chieu tinh » trieu tinh, lieu tinh, chau tinh
tang luan » dung luan
anh tang » anh bang, anh dang, anh nang
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac

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 tinh - anh tang luan phuong ((cong tan) or (cong san)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu tinh - anh tang luan phuong ((cong tan) OR (cong san)) van ban.
• Adding a wildcard symbol may retrieve word variants: theo chieu tinh - anh tang luan phuong ((cong tan) or (cong san)) van ban*.