Perhaps you should try some spelling variations:
chiet tach » chieu sach
hoc chiet » hoc thiet, hoc nhiet, hoc hien
trang cua » tang cua, trung cua, thang cua
tranh cua » doanh cua, manh cua
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan ban » van ban

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

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