Perhaps you should try some spelling variations:
quan nhung » qua nhung, cua nhung, luan chung
nhung cong » dung cong, thong cong, hang cong
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
hang tac » hang tai, sang tac, hang cac
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu sach - hang tac quan nhung cong ((dan toan) or (dan than)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - hang tac quan nhung cong ((dan toan) OR (dan than)) cao.
• Adding a wildcard symbol may retrieve word variants: theo chu sach - hang tac quan nhung cong ((dan toan) or (dan than)) cao*.