Originally Posted by
Meowmeowbeans
There is currently a known issue with the Alliance Search not returning any results. We're sorry for any inconvenience, and our engineering team is investigating and working to resolve the issue.
As a temporary workaround, you can find alliances through Global Chat. If you and your clan member can go on Global Chat at the same time and post a message, you can tap on the small green arrow on the message to visit the user. There you can tap on the red alliance flag and join the alliance. Hope that helps!