Perhaps you should try some spelling variations:
mathematical union » mathematical function, mathematical question, mathematical solution
ihrer grenzgebiete » ihre grenzgebiete, ihren grenzgebieten, der grenzgebiete
mer mathematical » her mathematical, mpr mathematical, over mathematical
ergebnisse mer » ergebnisse mean, ergebnisse mit, ergebnisse 3
bowel surgery » oral surgery
model survey » models survey, model surgery, modern 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 mer mathematical union ihrer grenzgebiete. 2. folge, a series of ((model survey) OR (bowel surgery)) in mathematics.
• Adding a wildcard symbol may retrieve word variants: ergebnisse mer mathematical union ihrer grenzgebiete. 2. folge, a series of ((model survey) or (bowel surgery)) in mathematics*.