Perhaps you should try some spelling variations:
ihrer grenzgebiete » ihre grenzgebiete, ihren grenzgebieten, der grenzgebiete
der mathematical » her mathematical, mer mathematical, order mathematical
mathematical und » mathematica und, mathematical union, mathematical using
modern survey » modern surgery, models survey, modeling survey
model surgery » modern surgery, bowel surgery, level surgery
model survey » models survey, moral survey, modeling survey
und ihrer » und ihre, 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 mathematical und ihrer grenzgebiete. 2. folge, a series of ((((model survey) OR (modern survey))) OR (((model surgery) OR (oral surgery)))) in mathematics.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ergebnisse der mathematical und ihrer grenzgebiete. 2. folge, a series of ((((model survey) or (modern survey))) or (((model surgery) OR (oral surgery)))) in mathematics".
• Adding a wildcard symbol may retrieve word variants: ergebnisse der mathematical und ihrer grenzgebiete. 2. folge, a series of ((((model survey) or (modern survey))) or (((model surgery) OR (oral surgery)))) in mathematics*.