Search in list of thing

Hi Need Help in search of list of thing

Each product has level and user also have level

Product A : d1 : s1 [linked to level table]
Product B : d1: s2 : E 3

User A : D1 : S2

User B : D 1 : S 1

User 3 : D1 : s2 : E 3

now product should be show only when user level [list] should exactly match with product list level

Really appreciate support on this

I think the reason nobody has suggested an answer to this question is that the description is incomprehensible.

Please could you use more examples and words? Someone usually picks up if it’s something that is understandable. Perhaps give screenshots.