How to make search index like this ?

When i search some things results pop in google like this which is very useful for users to access & try other threads straight away

Should we do something in vbulletin or vbseo or google webmaster tools to do that ?

 

Hi,

I don't think this is something you can control.

I believe Google does this automatically.

 

i think google add these type of link after certain visitor limit or how old is your site.
my two site link like this but i didnt done any extra effort for that.
its google algorithm!!!!!!!!!!!!!1

 

Yea if your forum is famous google will add it by them self

 

yeah now i realize its google algorithm