Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
dau sach » cau sach, hau sach, rau sach
dat sach » mat sach, dat khach, nam sach
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((dau sach) or (dat sach)) - thanh trung cua nhung ((cong dan) or (cong san)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((dau sach) OR (dat sach)) - thanh trung cua nhung ((cong dan) OR (cong san)) than cau.
• Adding a wildcard symbol may retrieve word variants: theo ((dau sach) or (dat sach)) - thanh trung cua nhung ((cong dan) or (cong san)) than cau*.