Perhaps you should try some spelling variations:
nhanh mang » nhanh lang, hanh mang, nhanh quang
nganh cong » nhanh chong, thanh cong
tieu xanh » tieu danh, chieu xanh, dieu hanh
cong van » cong vang, song van, cong tan
cong san » cong tac
toan ban » van ban
va dung » van dung, va duong, vat dung

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - ((nhanh mang) OR (nganh cong)) va dung ((cong van) OR (cong san)) toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - ((nhanh mang) or (nganh cong)) va dung ((cong van) OR (cong san)) toan ban~".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((nhanh mang) or (nganh cong)) va dung ((cong van) OR (cong san)) toan ban*.