Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
hanh manh » hanh mang, hoang manh, thanh minh
lanh manh » lanh tranh, lan anh, van manh
chua nang » chua xang, kha nang, cuu nang
doi hieu » doi chieu, doc hieu, doi hien
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban
chuc » thuc, chu, phuc

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 hieu lang - ((hanh manh) OR (lanh manh)) ((chua nang) OR (chuc nang)) cong dan toan ban~.
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - ((hanh manh) or (lanh manh)) ((chua nang) or (chuc nang)) cong dan toan ban*.