Perhaps you should try some spelling variations:
canh tinh » hanh tinh, manh tinh, canh tranh
dung cong » dung trong
chu xanh » chieu xanh, chua xang, chuc danh
chu manh » ho manh, chu han, chu van
tinh ung » tinh dung, trinh ung, tinh hung
van toan » van tuan, van tan, van thanh
tap doan » tap quan

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 ((chu xanh) OR (chu manh)) - canh tinh ung dung cong ((van toan) OR (tap doan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu xanh) OR (chu manh)) - canh tinh ung dung cong ((van toan) or (tap doan)) cau~".
• Adding a wildcard symbol may retrieve word variants: theo ((chu xanh) OR (chu manh)) - canh tinh ung dung cong ((van toan) or (tap doan)) cau*.