VBA Array VLookup And Multiple Results Output In One Cell

What I need is a script or formula with returns multiple results and puts them into one cell.

The Excel is used as a Project Managment Work Sheet for Resources, working on different Projects and their dedicated hours

The raw data table looks like this:
Column A: Project Name (=AllProjectsLists)
Column E: Resource Name (=MasterDataResources)
Column P: values from 0 to 8 (hours)

First I need to check per row the Resource Name. If the Resource Name is a match, than I need to check if in column P the value is bigger than 0. The result goes into a different sheet per row, one result per Resource, but the multiple results should be shown in one cell.

So the result should be something like:

Resource name "Thomas" .... Projects working on: "Project 1, Project 5, Project 13, ..." (in one cell)
Resource name "Mary" .... Projects working on: "Project 3, Project 9, Project 13, ..." (in one cell)

I tried with this one, but it only returns one vale per cell:

=SMALL(IF(E$9=MasterDataResources; ROW(MasterDataResources)-ROW($A$2)+1), ROW(1:1))
=INDEX(AllProjectsLists; SMALL(IF(E$9=MasterDataResources; ROW(MasterDataResources)-ROW($A$2)+1); ROW(1:1)))