Perhaps you should try some spelling variations:
khanh toan » thanh toan, khanh thanh, khanh thuan
hanh tang » hanh trang, anh tang, hanh mang
dang cong » dung cong
khan toan » khan than, thanh toan, chan doan
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 (khanh toan)) 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 (khanh toan)) 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 (khanh toan)) cau".
• Adding a wildcard symbol may retrieve word variants: ((cho cao) or (cho dao)) sach - hanh tang cua dang cong ((khan toan) OR (khanh toan)) cau*.