Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
manh tung » manh hung, thanh tung
nhung cau » chung cu, nhung bai, nhu cau
dang cong » dung cong
tung cua » trung cua, tuong cua, dung cua
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, 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: doi chieu sach - manh tung cua ((nhung cau) or (dang cong)) dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - manh tung cua ((nhung cau) OR (dang cong)) dan than cao.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - manh tung cua ((nhung cau) or (dang cong)) dan than cao*.