Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
tan toan » tan tran, tap toan, van toan
toan tap » toan ban

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 - ((hanh tang) OR (hanh mang)) cua ((nhung cong) OR (thong cong)) tan toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - ((hanh tang) or (hanh mang)) cua ((nhung cong) OR (thong cong)) tan toan tap~".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((hanh tang) or (hanh mang)) cua ((nhung cong) OR (thong cong)) tan toan tap*.