Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » tong cong, thong thong, phong chong
doi chieu » doc hieu, doi chi, ho chieu
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
san chan » san chang, dan chan, san chay
chan ban » can ban, chat ban, chan nan

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 tinh chat ((thong cong) or (trong cong)) san chan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh tinh chat ((thong cong) OR (trong cong)) san chan ban.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh tinh chat ((thong cong) or (trong cong)) san chan ban*.