Solr search results not showing variant products

Hi,

In my project I have below product structure

Base product : S102.103.111

Style Variant : S102.103.111_1 S102.103.111_2

Size variants: S102.103.111_1_12 S102.103.111_1_13

So when I search with base product code S102.103.111. It should return all the variant related to base product as all the variants have the baseproduct code(as a substring).

But it's not fetching the results.

Any inputs where I need to look into.

Sreenivas A.