Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
cua truong » cua trung, xuan truong, cac truong
hoc thieu » toc thieu, hoc hien
cua tong » cua cong, cua dong, cua nong
dan than » dan chan, ban than, van than
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: hoc thieu xanh - hanh trinh ((cua truong) or (cua tong)) huong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh trinh ((cua truong) OR (cua tong)) huong dan than cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh trinh ((cua truong) or (cua tong)) huong dan than cao*.