Perhaps you should try some spelling variations:
weser » weber (Expand Search), eser (Expand Search), leser (Expand Search)
wesen » westen (Expand Search)
wieger » wieder (Expand Search), wiener (Expand Search), wiege (Expand Search)
welser » belser (Expand Search), elser (Expand Search), welter (Expand Search)
wieser » wieder (Expand Search), wiener (Expand Search), wiese (Expand Search)
wiesel » ziesel (Expand Search), wiese (Expand Search)
dieser » dieter (Expand Search), diesem (Expand Search), 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: ((((weser OR wesen) OR wieger) OR welser) OR ((lieder OR (wieser OR wiesel)) OR dieser)) muller~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((weser OR wesen) OR wieger) OR welser) OR ((lieder OR (wieser OR wiesel)) OR dieser)) muller".
• Adding a wildcard symbol may retrieve word variants: ((((weser OR wesen) OR wieger) OR welser) OR ((lieder OR (wieser OR wiesel)) OR dieser)) muller*.