Perhaps you should try some spelling variations:
lan phuong » van phuong, dan phuong, lan thuong
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh tang » hanh trang, anh tang, hanh mang
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 tieu xanh - hanh tang lan phuong ((cong tan) or (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh tang lan phuong ((cong tan) OR (cong san)) toan cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh tang lan phuong ((cong tan) or (cong san)) toan cau*.