Double Filter

Hello 

I have created 3 tables

Table 1: Information related to Participant: Name, Country, Language Spoken, Unique Participant ID

Table 2: Information related to Courses: Course Name, Unique Course ID

Table 3: Curriculum Taken: Unique Curriculum ID, Unique Course ID from Table 2, Unique Participant ID from Table 1

So Table 3 & 1 has 1 to Many relationship & Table 3 & 2 has 1 to Many relationship 

How do I create double filer.  I have Visual's of a Map.  When I click on a country I get a visual of folks who have taken courses in that country long with languages they speak.  If I need to create a double filter to see...Person with German Language, with Course Name XYZ.....  display the list of Participant name.  How do i do that. 

Thanks 

VT