Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
tieu xanh » tieu danh, chieu xanh, tien anh
hanh mang » nhanh mang, hanh trang, nhanh lang
dung cong » dung trong
van toan » van tuan, van tan, van thanh
toan cau » toan cao, toan ban, toan tap
mang va » mang vua, hang va, bang va

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) or (dieu hanh)) - hanh mang va ((nhung cong) or (dung cong)) van toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu xanh) OR (dieu hanh)) - hanh mang va ((nhung cong) OR (dung cong)) van toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((tieu xanh) or (dieu hanh)) - hanh mang va ((nhung cong) or (dung cong)) van toan cau*.