Perhaps you should try some spelling variations:
thoi phuong » thi phuong, thoi huong, thong phuong
thanh trung » thanh tung
trung cua » truong cua, trung tuan, trung cap
chi sach » chinh sach, chieu sach, co sach
cua thoi » cua hoi, cua toi, cua khoi
dan than » dan chan, ban than, van than
van tuan » van quan, van ban
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi sach - thanh trung cua thoi phuong ((dan than) or (((van tuan) or (anh tuan)))) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi sach - thanh trung cua thoi phuong ((dan than) OR (((van tuan) OR (anh tuan)))) cau.
• Adding a wildcard symbol may retrieve word variants: doi chi sach - thanh trung cua thoi phuong ((dan than) or (((van tuan) or (anh tuan)))) cau*.