Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
doi chieu » doc hieu, doi chi, ho chieu
duong van » duong va, dang van, trong van
tuan chau » tran chau, chuan chau, thanh chau
va thong » va thuong, va phuong, he thong
luong va » dung va

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - ((thanh trung) or (thanh tung)) va thong ((duong van) OR (luong va)) tuan chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - ((thanh trung) OR (thanh tung)) va thong ((duong van) OR (luong va)) tuan chau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - ((thanh trung) or (thanh tung)) va thong ((duong van) OR (luong va)) tuan chau".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - ((thanh trung) or (thanh tung)) va thong ((duong van) OR (luong va)) tuan chau*.