Search partial text via API

Hi,
I would like to search partial text from all the content's Text and Rich text field using API.
I am not going to use GraphQL as we are Focusing on Native Mobile
We are able to search full text using following query
[fulltext(document,"family")]
It return all the documents which have Family word. But I want to achieve same thing when user just types fam. Is there any query that I can pass in API which will return me all the documents which has searched key(Partial key like Fam)

Hello @nelson-thomas.pereir

Thanks for reaching out to us.

We have already discussed this topic here:

Let me know if you have any further questions.

Thanks,
Priyanka