Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
tieu sach » dien sach, te sach, viet sach
cua nhung » va nhung
manh toan » thanh toan, anh tuan
tung cua » trung cua, tuong cua, dung cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((tieu sach) or (chieu sach)) - thanh tung cua nhung cong ((manh toan) or (tinh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu sach) OR (chieu sach)) - thanh tung cua nhung cong ((manh toan) OR (tinh toan)) cau.
• Adding a wildcard symbol may retrieve word variants: theo ((tieu sach) or (chieu sach)) - thanh tung cua nhung cong ((manh toan) or (tinh toan)) cau*.