Perhaps you should try some spelling variations:
tranh tuan » tran tuan, tranh luan, thanh tuan
tuan nhung » quan nhung, tuan hung, thuat nhung
hieu lang » chieu sang, hieu quang, nhieu tang
hoi hieu » hoi phieu, hoi tieu, moi hieu
cong dan » cong san, cong tan, cong dong
toan cao » toan tap
toan ban » van ban

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

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