Perhaps you should try some spelling variations:
hanh tang » hanh trang, anh tang, hanh mang
dang cong » dung cong
khan toan » khanh toan, thanh toan, chan doan
khan than » phan than, khoan thanh, khanh thanh
tang cua » mang cua, hang cua, tang luan
cua dang » cua cong, cua ban
cho cao » cho cac, cho can, cho bao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((cho cao) or (cho dao)) sach - hanh tang cua dang cong ((khan toan) OR (khan than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((cho cao) OR (cho dao)) sach - hanh tang cua dang cong ((khan toan) OR (khan than)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((cho cao) or (cho dao)) sach - hanh tang cua dang cong ((khan toan) OR (khan than)) cau".
• Adding a wildcard symbol may retrieve word variants: ((cho cao) or (cho dao)) sach - hanh tang cua dang cong ((khan toan) OR (khan than)) cau*.