Question

is it possible to export some questions and answers in a excel sheet ?

Comments

Did you tried this option before - https://dev.mysql.com/doc/mysql-for-excel/en/

Answer 1

You can export your qa_posts table to a CSV file using phpMyAdmin. You can also do an export based on a SQL query, so you could select only a few fields, for example 

SELECT postid, type, parentid, title, content FROM qa_posts ORDER BY created

Then underneath the table click "Export".

For anything more advanced you'll need to write some custom PHP code.