Hi
One such way is like this:
=SUM(SUMIFS(SumRange,CriteriaRange1,{"Crit1a","Crit1b","Crit1c","Crit1d"},CriteriaRange2,Criteria2))
The {} is an array constant - this can be a range of cells (single row or single column) holding the values but then you need to enter the formula with Ctrl+Shift+Enter rather than just Enter.