Perhaps you should try some spelling variations:
name mailing » name calling, name matching
mailing part » calling part, mapping part, training part
der code » bar code, qr code, du code
der co2 » zero co2
black a » black _, black 1, black r
hong 7 » hong w, hong a, hong g
kong » long, pong, ong

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: name mailing part ((der code) OR (der co2)) black a ((hong 7) OR (hong kong)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "name mailing part ((der code) OR (der co2)) black a ((hong 7) or (hong kong)) ;~".
• Adding a wildcard symbol may retrieve word variants: name mailing part ((der code) OR (der co2)) black a ((hong 7) or (hong kong)) ;*.