Perhaps you should try some spelling variations:
phuong manh » phuong anh, phung manh, phuong danh
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
truong cao » truong dai
nhu phuong » thu phuong, nhung phuong, thi phuong
trung cap » trung tam
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - thanh ((trung cap) OR (truong cao)) nhu phuong manh ((toan cau) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - thanh ((trung cap) or (truong cao)) nhu phuong manh ((toan cau) OR (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - thanh ((trung cap) or (truong cao)) nhu phuong manh ((toan cau) OR (toan ban))*.