Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
toc chieu » toc thieu, doc hieu, hoc thieu
van hoang » van hoan, quan hoang, tran hoang
dat hang » dat khanh, dat quang, tat thang
phan van » pham van, thanh van, luan van
cong so » cong san, cong hoa
so phan » co phan, hoc phan, hoa phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc chieu sach - thanh cong ((dat hang) or (van hoang)) cong so phan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc chieu sach - thanh cong ((dat hang) OR (van hoang)) cong so phan van.
• Adding a wildcard symbol may retrieve word variants: toc chieu sach - thanh cong ((dat hang) or (van hoang)) cong so phan van*.