Perhaps you should try some spelling variations:
modeling survey » modeling supply, modeling survival, modeling summary
models survey » models supply
und ihren » und ihrer, und ihr
mathematik » mathematical

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: ergebnisse der mathematik ((und ihren) OR (und ihre)) grenzgebieten. 2. folge, a series of ((models survey) OR (modeling survey)) in mathematics.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ergebnisse der mathematik ((und ihren) or (und ihre)) grenzgebieten. 2. folge, a series of ((models survey) OR (modeling survey)) in mathematics".
• Adding a wildcard symbol may retrieve word variants: ergebnisse der mathematik ((und ihren) or (und ihre)) grenzgebieten. 2. folge, a series of ((models survey) OR (modeling survey)) in mathematics*.