How can you see or know if there is a civil or criminal complaint against somebody in Germany? Is there a way to check this on Google?
Generally you can't, since a basic Personality rights exist for eveyone that must be balanced with public interest.
Allthough court proceedings are generally public, even the publication of when court sessions take place are very restrictive in the amount of information given out about what the session is about. How a court publishes this information seems to differ from court to court: public notice inside the court, press releases and sometimes an internet list.
Indictments, generally, may not be published before the proceedings begin (§ 353d StGB).
Proceedings before an Indictment
Since an Indictment will only be accepted by a court if the chances are that it more likely succeed than fail, you may assume that the police or state attorneys will be even more restrictive about publicizing any information about any criminal complaint (or investigation).
So the answer to your question, based on the reasons above is:
- no, there is no way to check this on google (from official sources)