Perhaps you should try some spelling variations:
"schriften zur technikgeschichte" » "vorschriften zur technikgeschichte", "schriften des technikgeschichte"
"schriften fur technikgeschichte" » "schriften der technikgeschichte", "schriften aus technikgeschichte", "vorschriften fur technikgeschichte"

Try widening your search to All Fields.

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"schriften zur technikgeschichte\") OR (\"schriften fur technikgeschichte\"))".
• Removing quotes may allow a broader search: (( schriften zur technikgeschichte ) OR ( schriften fur technikgeschichte )).
• Adding a wildcard symbol may retrieve word variants: (("schriften zur technikgeschichte") OR ("schriften fur technikgeschichte"))*.