Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
truong va » truong dai, truong cao, truong dao
dung cong » dung trong
trung ha » trung hoc, trung tam, trung cap
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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: doi chieu xanh - manh ((trung ha) or (truong va)) dung cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - manh ((trung ha) OR (truong va)) dung cong dan toan cao*.