Perhaps you should try some spelling variations:
mathematical question » mathematical questions, mathematical function, mathematical education
mathematical union » mathematical function, mathematical solution, mathematical foundation
ihrer grenzgebiete » ihre grenzgebiete, ihren grenzgebieten, der grenzgebiete
mathematical und » mathematica und, mathematical using, mathematical user
oder surveys » der surveys, other surveys, cover surveys

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