Having a community called "P-01234 - MyProject-Name" it's not possible to search for naming segments containing hyphens.
The following terms doesn't give any result:
In this example, it only works by searching for "MyProject". Especially the not working search for P-01234 is problematic since many users put thise project numbers in the title to let people directly know that this community is part of the given project.
The bug only appears in the "My community" view from the "Community" navigation. In the searchbar on the right, all three terms from the list above worked.