Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
nhanh lang » nhanh quang, nhanh thang, nhan dang
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh mang » nhanh mang, hanh trang, thanh hang
dung cong » dung trong
tan thanh » tran thanh, tang thanh, toan thanh
thanh cau » thanh chau, thanh mau, nhanh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - ((hanh mang) or (nhanh lang)) cua ((nhung cong) OR (dung cong)) tan thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - ((hanh mang) OR (nhanh lang)) cua ((nhung cong) OR (dung cong)) tan thanh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - ((hanh mang) or (nhanh lang)) cua ((nhung cong) OR (dung cong)) tan thanh cau".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((hanh mang) or (nhanh lang)) cua ((nhung cong) OR (dung cong)) tan thanh cau*.