Local Nominatim sometimes returns no results

Hello,

I followed these instructions to install Nominatim on a local server: http://wiki.openstreetmap.org/wiki/Nominatim/Installation

• I used the stable version 2.4.0
• I added the optional data from Wikipedia and Postcodes
• added the special phrases after the import was done

The planet import was done after 3 days and most queries return results. However for some addresses I get no results at all. The official Nominatim server returns results for the same addresses. What is wrong with my server? How can I get the same results as the official Nominatim server? Did I miss something in the import?

Here are some examples:

• http://nominatim.openstreetmap.org/search/?q=7%20Rue%20Madeleine%20Br%C3%A8s%2025000%20Besan%C3%A7on&format=json&addressdetails=1
• http://192.168.2.93/nominatim/search?q=7%20Rue%20Madeleine%20Br%C3%A8s%2025000%20Besan%C3%A7on&format=json&addressdetails=1
• http://nominatim.openstreetmap.org/search/?q=Rue%20de%20Logelbach%2068920%20Wintzenheim&format=json&addressdetails=1
• http://192.168.2.93/nominatim/search?q=Rue%20de%20Logelbach%2068920%20Wintzenheim&format=json&addressdetails=1

I checked if the place is in my database with the osmid http://nominatim.openstreetmap.org/details?osmid=52517028&osmtype=W & http://192.168.2.93/nominatim/details?osmid=52517028&osmtype=W both have the place. So it should be there, right? But on my server the geocoder gives no results.