Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
nhieu tang » chieu sang, hieu lang, nhiet nang
thong den » thong dien, thong dan, tuong den
chinh ta » chinh tai, chinh va, chinh tri
ta thong » tao thong, tac thong, tra thong
den toan » dien toan, dan toan, den tran
toan cao » toan ban, toan tap

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (nhieu tang)) - hanh chinh ta thong thong den toan cao~.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (nhieu tang)) - hanh chinh ta thong thong den toan cao*.