Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
doc chieu » doc hieu, doi chieu, toc thieu
cua thong » cua thuong, cua khong, cua tong
thong dan » thong van, tuong dan, thong den
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc chieu sach - ((thanh trung) or (thanh tung)) cua thong thong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc chieu sach - ((thanh trung) OR (thanh tung)) cua thong thong dan than cau.
• Adding a wildcard symbol may retrieve word variants: doc chieu sach - ((thanh trung) or (thanh tung)) cua thong thong dan than cau*.