In T210472 the "work" namespace (রচনা:) was introduced for linking different editions of the same work in the same place. Yet it does not appear that results from this namespace are being returned in search results by default. There is an immediate practical benefit (and, in my view, no foreseeable risk) in the first place to doing so, and the practical use of this namespace, which we plan to expand very soon, has been hampered in part by this absence.
I noted in T199028 that another new namespace should be searched by default and this was taken into consideration there, but explicit on-wiki community consensus on searching this particular namespace by default may be obtained if so desired.