Perhaps you should try some spelling variations:
thanh tien » thanh vien, thanh nien, thang tien
doan cuong » doan phuong, dai cuong, doan quang
chau tinh » cuu tinh, ha tinh, cua tinh
van cuong » van chuong, van duong, van cong
chu tinh » chua tinh, cuu tinh, chu tich
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan cau » toan cao, toan ban, toan tap

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