Perhaps you should try some spelling variations:
tien trinh » bien tinh, tien thanh, viet trinh
canh trang » canh tranh, hanh trang, banh trang
dang cong » dung cong
doan phan » doanh phan, toan phan, dan phan
trang va » tran van, hang va
dam phan » d phan, va phan, van phan
va dang » van dang, va nang, va lang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((tien trinh) OR (tien thinh)) - canh trang va dang cong ((dam phan) or (doan phan)) cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tien trinh) OR (tien thinh)) - canh trang va dang cong ((dam phan) OR (doan phan)) cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tien trinh) OR (tien thinh)) - canh trang va dang cong ((dam phan) or (doan phan)) cac".
• Adding a wildcard symbol may retrieve word variants: theo ((tien trinh) OR (tien thinh)) - canh trang va dang cong ((dam phan) or (doan phan)) cac*.