Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
lieu tinh » trieu tinh, diep tinh, bien tinh
nang cong » nang song, dang cong, bang cong
tranh va » tranh van, trang va, trinh va
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
va nang » van nang, da nang, cam nang

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: doi ((((chieu xanh) OR (chieu sach))) OR (lieu tinh)) - canh tranh va nang cong dan toan cao~.
• Adding a wildcard symbol may retrieve word variants: doi ((((chieu xanh) or (chieu sach))) or (lieu tinh)) - canh tranh va nang cong dan toan cao*.