Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
nhung cong » dung cong, thong cong, hang cong
hanh tang » hanh trang, anh tang, hanh mang
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban
tang va » trang va, tang van, thang va

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((thuc hanh) or (chieu xanh)) - hanh tang va nhung cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((thuc hanh) OR (chieu xanh)) - hanh tang va nhung cong dan toan ban.
• Adding a wildcard symbol may retrieve word variants: theo ((thuc hanh) or (chieu xanh)) - hanh tang va nhung cong dan toan ban*.