Perhaps you should try some spelling variations:
chiet tach » chieu sach
hieu lang » chieu sang, hieu quang, nhieu tang
canh manh » lanh manh, canh tranh, cach mang
manh che » hanh che, manh ghep, nganh che
che cong » cho cong, chi cong, he cong
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan ban » van ban

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 ((hieu lang) OR (chiet tach)) - canh manh che cong ((cong dan) OR (cong tan)) toan ban~.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (chiet tach)) - canh manh che cong ((cong dan) or (cong tan)) toan ban*.