Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
tuan nhung » quan nhung, tuan hung, thuat nhung
nhung cong » dung cong, thong cong, hang cong
tung tuan » trung tuan, hung tuan, quang tuan
chi sach » chinh sach, co sach, moi sach
sat phan » vat phan, xuat phan, va phan
sat nhan » hat nhan, ca nhan, tao nhan

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) OR (chieu sach)) - thanh tung tuan nhung cong ((sat phan) or (sat nhan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chi sach) OR (chieu sach)) - thanh tung tuan nhung cong ((sat phan) OR (sat nhan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chi sach) OR (chieu sach)) - thanh tung tuan nhung cong ((sat phan) or (sat nhan)) cau".
• Adding a wildcard symbol may retrieve word variants: doi ((chi sach) OR (chieu sach)) - thanh tung tuan nhung cong ((sat phan) or (sat nhan)) cau*.