SQL Conditional Inner Join Where - mysql

Question

I need to a conditional inner join with where.
I have an assessment form that has three particular fields: country, Degree and subject.
There is another form named "responds template" with the same fields: country, Degree and subject.
Advisers create some responds template by different condition to answer faster.
Advisers reply to the assessment inquiries in a reply form then I need to filter list of related responds as a drop down list base on user section in those filed.
for example if a user chose Country: USA, Degree: Master and subject: Math then I need to filter responds template based on these section and show only the responds templates for Country: USA, Degree: Master and subject: Math.
I used this code but it works just for the first condition "country" and doesn't work for second and third AND.
and also I need to filter by country and degree if there is not any item matched with first condition.
WHERE {thistable}.id IN (
SELECT app_responds.id
FROM app_responds AS app_responds
INNER JOIN app_assessment AS app_assessment
ON app_responds.destination = app_assessment.destination_country AND
app_responds.degree = app_assessment.degree AND
app_responds.field_of_study = app_assessment.field_of_study_id AND
app_responds.subject = app_assessment.subject_id
)

Answer 1

Did you try to use OR instead of AND. That gives you any match from your conditions. If you use AND all tree conditions should be TRUE in order to get a value