There are ways around this limitation. Without knowing specifically
what contexts you're using, I can't say exactly how to work around it,
but as an example, if you need to do this:
Context: Power Any
Context: Docked Car
Context: Bluetooth Connected
<task>
You could do this instead:
Context: Power Any
Context: Docked Car
Enter Task:
Variable Set %POWERDOCK = 1
Exit Task:
Variable Clear %POWERDOCK
Context: Variable Value %POWERDOCK = 1
Context: Bluetooth Connected
<task>
Basically, take any two contexts, and when they are both true, set a
variable. When either one (or both) are no longer true, clear the
variable. You can then use the variable as a single context.