Formula To Count Occurrences Of Multiple Elements Within A String

I have a number of records that have in one cell a string of the form 1,2,3 etc (up to 10) representing conditions that have been met. There are a number of options available for producing reports on all of the other attributes in a record but now we wish to add this element as well.

The reports I can produce using VBA and the INSTR function, however on the summary page where, a total of all records matching available criteria is shown, depending upon drop down items being selected, I need to add this element to the equation as well. The existing conditions are counted using SUMPRODUCT and a combination of IF statements and work fine.

As there is an option to create a report for both AND and OR, e.g. if condition 1 and 2 and 3 apply include in the report, or if condition 1 or 2 or 3 apply include in the report

The conditions are selected using a check box and a drop down list to select the AND/OR condition.

I have been trying various combinations of database functions, countif, find and cannot get them to evaluate. I suspect that it may be beyond my reach to use a formula and I will need to use VBA with a Worksheet_Change macro to achieve what I want, or alternatively redesign the layout to store the conditions differently, however if anyone has any ideas for a formula I would much appreciate hearing from you.

A sample worksheet illustrates how the data is currently shown. The string in the record column is created using VBA and then inserted into the actual record.