Hi, I am trying to search patents that contain the words "block chain" or "block chains" in the patent title and patent abstract using API.

For now, my query looks like, "{"_or":[{"_text_phrase":{"patent_abstract":"block chain"}},{"_text_phrase":{"patent_abstract":"block chains"}}]}. Is there any way I can search with a shortened query, such as "block chain*" that captures both "block chain" and "block chains"? I think I saw from the other places, they use asterisk symbol to do this kind of function. I was just wondering whether Patentsview also have that kind of query technique.

Thank you.