Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
cac nhung » cac chung, cam nhung, cac phuong
van thanh » ban thanh, van tuan
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
cong cac » cuong cac, cong tac, cong cau
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat

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 - thanh cong cac nhung cong ((((dan than) or (van thanh))) or (dan chan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - thanh cong cac nhung cong ((((dan than) OR (van thanh))) OR (dan chan)) cau.
• Adding a wildcard symbol may retrieve word variants: theo chu sach - thanh cong cac nhung cong ((((dan than) or (van thanh))) or (dan chan)) cau*.