Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
lan phuong » van phuong, dan phuong, lan thuong
anh tang » anh bang, anh dang, anh nang
tang lan » tang luan, tang van, tang dan
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan cau » toan cao, toan ban, toan tap

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