Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
truong cao » truong dai
tang nguon » tang nguyen, dung nguon, bang ngon
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
nguon dan » nguong dan, nguoi dan, ngon dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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 - thanh ((trung cua) or (truong cao)) tang nguon dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh ((trung cua) OR (truong cao)) tang nguon dan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((trung cua) or (truong cao)) tang nguon dan toan cau*.