Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
cong thanh » dong thanh, cong trinh, cong tan
thanh than » thanh thanh, thanh thang, thanh toan
viet dung » viet hung, viet huong, viet trung
ho chieu » theo chieu, hoc thieu, doi chieu
hanh han » hanh nhan, hanh phan, hanh san
vat dung » van dung, mat duong, xay dung
va dung » van dung, va duong, va ung
than ma » than man, than va, khan ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - hanh han ((va dung) or (((vat dung) or (viet dung)))) cong thanh than ma~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh han ((va dung) OR (((vat dung) OR (viet dung)))) cong thanh than ma.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh han ((va dung) or (((vat dung) or (viet dung)))) cong thanh than ma*.