Perhaps you should try some spelling variations:
thanh tang » thanh thang, thanh trang, thanh tung
dung cong » dung trong
bang than » bang thanh, ban than, bang nhan
sang than » cang thang, dang thanh, sang tao
theo cau » theo chu, theo cap, theo dau
cau sach » cao sach, hau sach, rau sach
tang tai » hang tai, dung tai, sang tao
tai dung » trai dung, thi dung, mai dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo cau sach - thanh tang tai dung cong ((bang than) OR (sang than)) ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo cau sach - thanh tang tai dung cong ((bang than) OR (sang than)) ban".
• Adding a wildcard symbol may retrieve word variants: theo cau sach - thanh tang tai dung cong ((bang than) OR (sang than)) ban*.