Using query function with ' where Col1 or Col2 is not null'?

=query({TOIM;IMTO},"SELECT * where Col1 is not null ORDER by Col11",0)

Where TOIM,IMTO are named ranges.
I want to rewrite the formula with two criteria (OR). In other words like this

=query({TOIM;IMTO},"SELECT * where Col1 or Col3 is not null ORDER by Col11",0)

But that seems not the correct argument