Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
nhung cong » dung cong, thong cong, hang cong
hanh dung » thanh dung, anh dung, hanh dong
hieu van » hieu va, thien van, lieu va
cong san » cong tac
san toan » van toan, dan toan, manh toan
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: theo ((chieu sang) or (hieu van)) - hanh dung va nhung cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (hieu van)) - hanh dung va nhung cong san toan ban.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (hieu van)) - hanh dung va nhung cong san toan ban*.