Perhaps you should try some spelling variations:
tieu sach » chieu sach, dien sach, viet sach
tranh cua » manh cua
doanh cua » doanh luan
hang cong » dang cong, hang nong, bang cong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban
te sach » toc sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((tieu sach) OR (te sach)) - hanh ((tranh cua) or (doanh cua)) hang cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu sach) OR (te sach)) - hanh ((tranh cua) OR (doanh cua)) hang cong dan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu sach) OR (te sach)) - hanh ((tranh cua) or (doanh cua)) hang cong dan toan ban".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu sach) OR (te sach)) - hanh ((tranh cua) or (doanh cua)) hang cong dan toan ban*.