Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
lang cuong » tang cuong, dang cuong, lang cung
cuong danh » cuon danh, huong dan, cuong linh
cong thuc » cong tac
thuc lang » thuc trang, thuc hanh, thuc dan
danh van » doanh van, dang van, dinh van

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sang) or (chieu sach)) - thanh cong thuc lang cuong danh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (chieu sach)) - thanh cong thuc lang cuong danh van ban.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) or (chieu sach)) - thanh cong thuc lang cuong danh van ban*.