Perhaps you should try some spelling variations:
thanh hang » thanh hoang, thanh thang, tranh hang
chua tinh » cua tinh, cha tinh, thuat tinh
dung cong » dung trong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
chu tinh » chau tinh, cuu tinh, chu tich
toan tap » toan ban
va dung » van dung, va duong, vat dung

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