combining 2 explorations in Amibroker

Hi people. How do I combine 2 scan/exploration formulas so I can narrow down my results? I want to play around with different formulas in combination with each other and see what gives me the best results.
Yes you can..
Say u have 2 system like RSibuy and EMAbuy..
write conditions for buy and sell for the same
And in the Filter
Filter =RSibuy or EMABuy;