Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
hanh tang » hanh trang, anh tang, hanh mang
hang cong » dang cong, hang nong, bang cong
cong van » cong vang, cong san, song van
than man » thanh san, tran manh, than phan
tang va » trang va, tang van, thang va
va hang » van hang, va nang, va lang
than ma » than va, khan ma, nhan ma

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 - hanh tang va hang cong van ((than man) or (than ma))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh tang va hang cong van ((than man) OR (than ma)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh tang va hang cong van ((than man) or (than ma))*.