Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
hieu lang » chieu sang, hieu quang, nhieu tang
trong hai » trong thai, trong tai, trong hoat
dang cong » dung cong
hai dang » hai bang, dai dang, hoi dang
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
ho hieu » ho chieu, hoi hieu, nho hieu

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

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