Perhaps you should try some spelling variations:
welser » elser (Expand Search), welter (Expand Search), weser (Expand Search)
belser » belzer (Expand Search), elser (Expand Search)
wieselr » wiesel (Expand Search), wieser (Expand Search), wiesellr (Expand Search), wieserlr (Expand Search), wiegelr (Expand Search)
wiener » wieder (Expand Search)
wiese » wiesel (Expand Search), wieser (Expand Search), wiege (Expand Search)
dieser » dieter (Expand Search), dieses (Expand Search), diemer (Expand Search)
diesem » dieses (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((welser OR (belser OR walter)) OR (((wieselr OR wiener) OR wiese) OR (dieser OR diesem))) muller~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((welser OR (belser OR walter)) OR (((wieselr OR wiener) OR wiese) OR (dieser OR diesem))) muller".
• Adding a wildcard symbol may retrieve word variants: ((welser OR (belser OR walter)) OR (((wieselr OR wiener) OR wiese) OR (dieser OR diesem))) muller*.