How to Enable safe search in Google search /How to Enable Parental control in Google search result

In our Internet world, 1000 of contents uoloaded every seconds,some may be harm to minor people some may offencieve.Google default search settings allow everything without any restriction.But we can change settings to help our childrens from offencieve contents.

How to Enable parental control in Google search

No filtering :Appear everything 
Moderate:Appear almost all.Harm to minor
Strict: Almost all offencive contens remove from search results.Good serching 
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