Perhaps you should try some spelling variations:
"german official archives" » "german judicial archives", "german municipal archives", "german fluvial archives", "german officials archives", "germany official archives", "germany officials archives"
"german colonial archives" » "german colonial archive", "german colonial narratives", "german cultural archives", "german colonialism archives", "germany colonies archives", "american colonial archives"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("german official archives") OR ("german colonial archives")).
• Removing quotes may allow a broader search: (( german official archives ) or ( german colonial archives )).
• Adding a wildcard symbol may retrieve word variants: (("german official archives") or ("german colonial archives"))*.