Perhaps you should try some spelling variations:
thanh tung » thanh cong
quang dung » quang trung, ung dung, cuong dung
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
khi sach » khi sac, khoa sach, khau sach
cua dang » cua cong, cua ban
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi khi sach - thanh tung ((quang dung) or (cua dang)) cong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi khi sach - thanh tung ((quang dung) OR (cua dang)) cong manh toan ban.
• Adding a wildcard symbol may retrieve word variants: doi khi sach - thanh tung ((quang dung) or (cua dang)) cong manh toan ban*.