To search for hints you need to specify text that you think was highlighted by the author (a highlight). If you suspect multiple highlights, concatenate them with @, like this:
highlight1 @ highlight2
Highlights are case-insensitive, so searching for HiGhLight will return the same results as searching for highlight.
When you create a new hint, wrap text in asterisks (*) to highlight it. For example:
this will be a *valid highlight*
Use appropriate highlights to make your hint discoverable—or not, and express thoughts that can’t be traced…