Perhaps you should try some spelling variations:
"the urban bias sources" » "the urban beams sources", "the urban iras sources", "the urban gas sources", "the urban bus sources"
"the urban stias series" » "the urban studies series", "the urban skills series", "the urban status series", "the urban soils series", "the urban alias series", "the urban spas series"
"the urban series series" » "the urban services series", "the urban serious series", "the urban species series"
"the urban bias series" » "the urban bus series"

Try widening your search to All Fields.

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 bias series") OR ("the urban bias sources"))) OR ((("the urban stias series") OR ("the urban series series")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"the urban bias series\") OR (\"the urban bias sources\"))) or (((\"the urban stias series\") or (\"the urban series series\"))))".
• Removing quotes may allow a broader search: (((( the urban bias series ) OR ( the urban bias sources ))) or ((( the urban stias series ) or ( the urban series series )))).
• Adding a wildcard symbol may retrieve word variants: (((("the urban bias series") OR ("the urban bias sources"))) or ((("the urban stias series") or ("the urban series series"))))*.