Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
trung tuan » trung thanh, trung tam, tran tuan
tuan tong » toan tong, thuan trong, toan thong
cong vang » cong lang, cong quang, cong ngang
khang cau » hang cau, khang cu, khang chan
cong san » cong tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chinh sach) or (chiet tach)) - thanh trung tuan tong ((cong vang) or (cong san)) khang cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chinh sach) OR (chiet tach)) - thanh trung tuan tong ((cong vang) OR (cong san)) khang cau.
• Adding a wildcard symbol may retrieve word variants: doi ((chinh sach) or (chiet tach)) - thanh trung tuan tong ((cong vang) or (cong san)) khang cau*.