Perhaps you should try some spelling variations:
ihre grenzgebiete » ihren grenzgebieten, die grenzgebiete, im grenzgebiet
der mathematical » her mathematical, mer mathematical, order mathematical
mathematical und » mathematica und, mathematical union, mathematical using
other surveys » other survey, other surgeons
oder surveys » der surveys, cover surveys, our surveys
user surveys » use surveys, user survey, cluster 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 ihre grenzgebiete. 2. folge, a series of ((((oder surveys) OR (user surveys))) OR (other surveys)) in mathematics.
• Adding a wildcard symbol may retrieve word variants: ergebnisse der mathematical und ihre grenzgebiete. 2. folge, a series of ((((oder surveys) or (user surveys))) or (other surveys)) in mathematics*.