Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
truong cao » truong dai
dung khong » dung khang, dung hong, dung phong
khong bang » hong bang, khong cang, phuong bang
hoc thieu » toc thieu, hoc hien
trung cap » trung tam
than cau » toan cau, phan cau, than cap
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 cap) or (truong cao)) dung khong bang ((than cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh ((trung cap) OR (truong cao)) dung khong bang ((than cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((trung cap) or (truong cao)) dung khong bang ((than cau) or (toan cao))*.