Using mastodon.social, searching your ID I get 2 posts! Google has several times that. With 10 API calls I could search 10*40 tweets.

https://www.google.com/search?q=site%3Amastodon.social%20%22%40davidr%40hachyderm.io%22

@davidr

`from:@mistersql IDEA` or
`in:library IDEA`

I don't know if there is a UI widget to do that "search my posts", I think twitter's UI had that.