Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tieu xanh » tieu danh, chieu xanh, dieu hanh
cach dung » sach dung, cach mang, tac dung
cua nhung » va nhung
manh toan » thanh toan, anh tuan, tinh toan
dung cua » dung luan, dung cho
dan toan » van toan, dan than, xuan toan

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