Perhaps you should try some spelling variations:
phuong toan » phong toan, phuong tran, phuong doan
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
toan hanh » toan thanh, toan anh, tran hanh
cua tong » cua cong, cua nong, cua song
cua dong » chua dong, cua cong, cua dang
hanh mau » thanh mau, anh mau, hanh ma

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 - canh tranh ((cua tong) or (cua dong)) phuong toan hanh mau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - canh tranh ((cua tong) OR (cua dong)) phuong toan hanh mau.
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - canh tranh ((cua tong) or (cua dong)) phuong toan hanh mau*.