Perhaps you should try some spelling variations:
yale » yalex (Expand Search)
ale » alex (Expand Search)
alle » halle (Expand Search), falle (Expand Search)
aller » haller (Expand Search), faller (Expand Search)
hhaller » hhhaller (Expand Search), hhfaller (Expand Search)
alte » alten (Expand Search), alt (Expand Search)
alter » altenr (Expand Search), altr (Expand Search), walter (Expand Search), alten (Expand Search)
walten » waltenn (Expand Search), waltn (Expand Search), walter (Expand Search), alten (Expand Search), balten (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (yale OR (ale OR ((alle OR alte) OR ((aller OR hhaller) OR (alter OR walten))))) universitat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(yale OR (ale OR ((alle OR alte) OR ((aller OR hhaller) OR (alter OR walten))))) universitat".
• Adding a wildcard symbol may retrieve word variants: (yale OR (ale OR ((alle OR alte) OR ((aller OR hhaller) OR (alter OR walten))))) universitat*.