Unfortunately, while that tells you how many operands there are, it doesn't help you find them in the surrounding syntax.
In Forth, for instance, the operands of a + could be a pair of immediately preceding constants like 1 2 +. These could be far away in a contrived way: 1 2 [... snip stuff that produces side effects and keeps stack balanced ...] +. Or just due to expression complexity: [30 word expr] [27 word expr] +: the left operand of + is the result of the 30 word expr, which is 27 words away from the + symbol. Or is that 26? 29?