Perhaps you should try some spelling variations:
involuntary hospitalisation » involuntary hospitalization
involuntary sterilization » involuntary hospitalization
voluntary sterilization » voluntary termination, voluntary certification

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: ((((voluntary sterilization) OR (involuntary sterilization))) OR (involuntary hospitalisation)) / law AND legislation / slovakia.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((voluntary sterilization) OR (involuntary sterilization))) or (involuntary hospitalisation)) / law and legislation / slovakia".
• Adding a wildcard symbol may retrieve word variants: ((((voluntary sterilization) OR (involuntary sterilization))) or (involuntary hospitalisation)) / law and legislation / slovakia*.