Perhaps you should try some spelling variations:
"the urban housing series" » "the urban housing services", "the urban using series", "the urban housing serve"
"the urban air series" » "the urban air services", "the urban air species", "the urban air strikes"

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: (("the urban air series") OR ("the urban housing series")).
• Removing quotes may allow a broader search: (( the urban air series ) or ( the urban housing series )).
• Adding a wildcard symbol may retrieve word variants: (("the urban air series") or ("the urban housing series"))*.