A SELECT with INNER JOIN don’t works

Question

Hi, i have a Query to extrac records with "NULL" values from two diferents tables, if i execute them by separate it works, but i execute them together with a INNER JOIN don´t extrac any records, some reason for that??

 

here the evidence:

 

Query 1:

 

 

Query 2:

 

 

 

JOIN QUERY:

 

 

 

Thanks...