Perhaps you should try some spelling variations:
langer » langen (Expand Search), lander (Expand Search), langenr (Expand Search), lager (Expand Search)
langenr » langen (Expand Search), langenau (Expand Search), langennr (Expand Search), lagenr (Expand Search)
lange » langen (Expand Search), lage (Expand Search)
erlangen » erlangenn (Expand Search), erlagen (Expand Search), erlangung (Expand Search), langen (Expand Search)
lagen » lagern (Expand Search), klagen (Expand Search), plagen (Expand Search)
taschenbucher" » taschenbuch" (Expand Search)

Try widening your search to All Fields.

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

• Removing quotes may allow a broader search: (((langer OR langenr) OR lange) OR (erlangen OR lagen)) taschenbucher.