When you click on 'join or create a team', a search bar is offered but it only allows search by the start of the name. e.g. "The Social Club" cannot be found be a search for social or club, it would be more intuitive if this were possible.
The workaround of using /Join in the top application search/command bar works as expected.
Please fix the search to be more intuitive.
Dean Gross commented
Searching for a team only works if you know the first few letters of the team name, It needs to find teams when you search for any word in the title of the team