Perhaps you should try some spelling variations:
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
cua thong » cua thuong, cua khong, cua tong
cong san » cong tac
toan cao » toan tap
toan ban » van 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 thong cong san ((toan cao) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - ((hanh tang) OR (hanh mang)) cua thong cong san ((toan cao) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((hanh tang) OR (hanh mang)) cua thong cong san ((toan cao) or (toan ban))*.