Perhaps you should try some spelling variations:
"schriften zur technikgeschichte" » "schriften fur technikgeschichte", "vorschriften zur technikgeschichte"
"schriften des technikgeschichte" » "schriften der technikgeschichte", "schriften die technikgeschichte", "schriften 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 des technikgeschichte\"))".
• Removing quotes may allow a broader search: (( schriften zur technikgeschichte ) OR ( schriften des technikgeschichte )).
• Adding a wildcard symbol may retrieve word variants: (("schriften zur technikgeschichte") OR ("schriften des technikgeschichte"))*.