Perhaps you should try some spelling variations:
assuring data » ensuring data, assessing data, acquiring data
yang yang » wang yang, wang yan
wei start » we start, new start, des start
der start » der stadt, der staat, der stadte
data bank » data book, data base, pada bank
yin hang » yin fang, yin yang, ying chang

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: ((yang yang) OR (yin hang)) zhang ((wei start) OR (der start)) pigging assuring data bank ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang yang) or (yin hang)) zhang ((wei start) OR (der start)) pigging assuring data bank ;~".
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (yin hang)) zhang ((wei start) OR (der start)) pigging assuring data bank ;*.