Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung tuan » trung thanh, trung tam, tran tuan
tuan nhung » quan nhung, tuan hung, thuat nhung
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
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 chu sach - thanh trung tuan nhung ((huong dan) or (cong san)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - thanh trung tuan nhung ((huong dan) OR (cong san)) than cau.
• Adding a wildcard symbol may retrieve word variants: theo chu sach - thanh trung tuan nhung ((huong dan) or (cong san)) than cau*.