Perhaps you should try some spelling variations:
"schriften des burgerlichen recht" » "schriften des burgerlichen rechts", "schriften des burgerliches recht"
"vorschriften zur burgerlichen recht" » "vorschriften zur burgerlichen rechts", "vorschriften zur burgerliches recht", "vorschriften fur burgerlichen recht", "vorschriften des burgerlichen recht", "vorschriften zum burgerlichen recht", "vorschriften der burgerlichen recht", "vorschriften dem burgerlichen recht"

Try widening your search to All Fields.

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: (("schriften des burgerlichen recht") OR ("vorschriften zur burgerlichen recht")).
• Removing quotes may allow a broader search: (( schriften des burgerlichen recht ) or ( vorschriften zur burgerlichen recht )).
• Adding a wildcard symbol may retrieve word variants: (("schriften des burgerlichen recht") or ("vorschriften zur burgerlichen recht"))*.