Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh hang
thanh hong » thanh huong, thanh hoang, thanh cong
quang dong » quang dung, quan dong, quang cuong
tieu sach » chieu sach, dien sach, te sach
dong cong » duong cong, dung cong, dang cong
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - ((thanh thang) or (thanh hong)) quang dong cong tac than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - ((thanh thang) OR (thanh hong)) quang dong cong tac than cap.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - ((thanh thang) or (thanh hong)) quang dong cong tac than cap*.