Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
thanh toan » thanh hoa, thanh san, tinh toan
dien sach » dien anh
toan cau » toan cao, toan ban, toan tap
tung va » trung va, tuong 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: theo ((dien sach) or (chieu sach)) - thanh tung va ((nhung cong) OR (thong cong)) thanh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((dien sach) OR (chieu sach)) - thanh tung va ((nhung cong) OR (thong cong)) thanh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((dien sach) or (chieu sach)) - thanh tung va ((nhung cong) OR (thong cong)) thanh toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((dien sach) or (chieu sach)) - thanh tung va ((nhung cong) OR (thong cong)) thanh toan cau*.