Perhaps you should try some spelling variations:
thanh trung » thanh tung
chao hieu » cao hieu, co hieu, chi hieu
hieu lang » chieu sang, hieu quang, nhieu tang
lang cong » dang cong, bang cong, hang cong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban
va lang » va nang, hoa lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: chao hieu lang - ((canh tranh) or (thanh trung)) va lang cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao hieu lang - ((canh tranh) OR (thanh trung)) va lang cong dan toan ban.
• Adding a wildcard symbol may retrieve word variants: chao hieu lang - ((canh tranh) or (thanh trung)) va lang cong dan toan ban*.