If you are unable to find your papers when you search for them by title and by author, please refer your publisher to the technical guidelines.

You can also deposit your papers into your institutional repository or put their PDF versions on your personal website, follow your publisher's requirements when you do so. these are Google Scholar's technical guidelines for more details on the inclusion process.

New papers are generally several times a week. It takes time to crawl larger websites, and corrections to already included papers can take 6-9 months to a year or longer.