Perhaps you should try some spelling variations:
hoc chieu » hoc thieu, ho chieu, hoc dieu
song cong » cong cong, tong cong, song hong
tang qua » tang quan, tang quy, tang quang
tang cua » mang cua, hang cua, tang luan
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) or (hoc hien)) sach - hanh ((tang qua) or (tang cua)) song cong dan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc hien)) sach - hanh ((tang qua) OR (tang cua)) song cong dan than ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (hoc hien)) sach - hanh ((tang qua) or (tang cua)) song cong dan than ban*.