Perhaps you should try some spelling variations:
cong khanh » cong thanh, cong khan, cong nhan
chieu sang » chieu sach, chieu xanh, hieu lang
khanh toan » thanh toan, khanh thanh, khanh thuan
tong cong » trong cong, cong cong, dung cong
thang va » hang va, trang va, thong va
toan ban » van ban
tang va » trang va, tang van, tang vat

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

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