Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
nhung cong » thong cong, hang cong, nhung don
tung tuan » trung tuan, hung tuan, quang tuan
dung cong » dung trong
chi sach » chinh sach, co sach, moi sach
sat phan » sat nhan, vat phan, xuat phan
phan cau » phan dau, phan cac, phan tu

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) or (dung cong)) sat phan 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) OR (dung cong)) sat phan 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) or (dung cong)) sat phan cau".
• Adding a wildcard symbol may retrieve word variants: doi ((chi sach) OR (chieu sach)) - thanh tung tuan ((nhung cong) or (dung cong)) sat phan cau*.