Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
quang dung » quang trung, ung dung, cuong dung
sinh sach » chinh sach, sinh san, sang sach
quan dung » quan duong, qua dung, quan dong
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cap » khan cap, than cap, cao cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sinh sach - thanh trong ((quan dung) or (quang dung)) cong dan chan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sinh sach - thanh trong ((quan dung) OR (quang dung)) cong dan chan cap.
• Adding a wildcard symbol may retrieve word variants: hoc sinh sach - thanh trong ((quan dung) or (quang dung)) cong dan chan cap*.