Perhaps you should try some spelling variations:
phuong doan » phuong loan, phuong hoang, huong dan
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
phuong dan » phuong danh, huong dan, phuong lan
cua dong » chua dong, cua dang, cua nong
than tap » toan tap, han tap, phan 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 - hanh tranh ((cua dong) OR (cua cong)) ((phuong dan) or (phuong doan)) than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - hanh tranh ((cua dong) OR (cua cong)) ((phuong dan) OR (phuong doan)) than tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - hanh tranh ((cua dong) OR (cua cong)) ((phuong dan) or (phuong doan)) than tap".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - hanh tranh ((cua dong) OR (cua cong)) ((phuong dan) or (phuong doan)) than tap*.