Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
buoc phuong » buoc huong, duoc phuong, hoc phuong
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
tung buoc » trung quoc, ung buou
cong tac » cong ty
toan cau » toan cao, toan ban, toan tap
phan cau » phan dau, phan cac, phan tu

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 - thanh tung buoc phuong cong tac ((toan cau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - thanh tung buoc phuong cong tac ((toan cau) OR (phan cau))*.