Perhaps you should try some spelling variations:
phuong bang » phuong hoang, phuong giang, phuong quang
cua truong » cua trung, xuan truong, cac truong
hanh trang » thanh trung, hanh trinh, minh trang
phuong ban » phuong lan, phuong bac, phong ban
tieu xanh » tieu danh, chieu xanh, dieu hanh
than cao » toan cao, thai cao, than cap

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 trang) or (canh tranh)) cua truong ((phuong ban) OR (phuong bang)) than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - ((hanh trang) OR (canh tranh)) cua truong ((phuong ban) OR (phuong bang)) than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - ((hanh trang) or (canh tranh)) cua truong ((phuong ban) OR (phuong bang)) than cao".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((hanh trang) or (canh tranh)) cua truong ((phuong ban) OR (phuong bang)) than cao*.