Perhaps you should try some spelling variations:
mathematical union » mathematical function, mathematical question, mathematical solution
ihrer grenzgebiete » ihre grenzgebiete, ihren grenzgebieten, der grenzgebiete
der mathematical » her mathematical, mer mathematical, order mathematical
models survey » modeling survey, models supply
modern survey » modern surgery, modeling survey, modern supply
model survey » model surgery, moral survey, modeling survey
union ihrer » union ihre, function ihrer, funktion ihrer

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 mathematical union ihrer grenzgebiete. 2. folge, a series of ((((model survey) OR (models survey))) OR (modern survey)) in mathematics.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ergebnisse der mathematical union ihrer grenzgebiete. 2. folge, a series of ((((model survey) OR (models survey))) or (modern survey)) in mathematics".
• Adding a wildcard symbol may retrieve word variants: ergebnisse der mathematical union ihrer grenzgebiete. 2. folge, a series of ((((model survey) OR (models survey))) or (modern survey)) in mathematics*.