Perhaps you should try some spelling variations:
modeling survey » modeling survival, modeling summary, modeling surface
modeling supply » modelling supply, modeling support, model supply
models survey » models supply
und ihren » und ihrer, und ihr

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) OR (modeling supply)))) 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) OR (modeling supply)))) 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) OR (modeling supply)))) in mathematics*.