Perhaps you should try some spelling variations:
"the urban stias series" » "the urban atlas series", "the urban studies series", "the urban series series", "the urban soils series", "the urban spas series"
"the urban bias sources" » "the urban beams sources", "the urban iras sources", "the urban gas sources"
"the urban alias series" » "the urban atlas series", "the urban pandas series", "the urban alias harries", "the urban areas series", "the urban aerial series"
"the urban bias series" » "the urban atlas series"
"the urban bus sources" » "the urban des sources", "the urban gas sources", "the urban cis sources"

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 bus sources"))))) OR ((("the urban stias series") OR ("the urban alias 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 bus sources\"))))) or (((\"the urban stias series\") or (\"the urban alias series\"))))".
• Removing quotes may allow a broader search: (((( the urban bias series ) or ((( the urban bias sources ) OR ( the urban bus sources ))))) or ((( the urban stias series ) or ( the urban alias series )))).
• Adding a wildcard symbol may retrieve word variants: (((("the urban bias series") or ((("the urban bias sources") OR ("the urban bus sources"))))) or ((("the urban stias series") or ("the urban alias series"))))*.