Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
trung ha » trung hoc, trung cap
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
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 ha) or (trung tam)) dung cong van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh ((trung ha) OR (trung tam)) dung cong van toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((trung ha) or (trung tam)) dung cong van toan cao*.