Engineering Education crosses both fields - Engineering & Education. To be thorough, you need to search the databases of both areas. Even if the same journals and conferences are covered, the indexing is from a different point of view. Any article that shows up in more than 1 database is worth looking at.
Please note that while EI Compendex & Inspec do include publications from the professional engineering associations, they do not include all of them; thus, both of these plus the professional association digital libraries must be searched.