Perhaps you should try some spelling variations:
mathematical union » mathematical function, mathematical question, mathematical solution
ihrer grenzgebiete » ihre grenzgebiete, ihren grenzgebieten, der grenzgebiete
mathematical und » mathematica und, mathematical using, mathematical user
und grenzgebiete » im grenzgebiet
ergebnisse her » ergebnisse h, ergebnisse haben, ergebnisse host
modern surveys » modern survey, oder surveys, modern purveyors

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