Perhaps you should try some spelling variations:
"contemporary tourism africa theory series." » "contemporary tourist africa theory series.", "contemporary irish africa theory series.", "contemporary topics africa theory series.", "contemporary tourism asia theory series.", "contemporary tourism america theory series.", "contemporary tourism africa others series."
"contemporary port area poverty series." » "contemporary post area poverty series.", "contemporary north area poverty series.", "contemporary art area poverty series.", "contemporary port area poverty severity.", "contemporary port armenia poverty series.", "contemporary port lanka poverty series.", "contemporary port a poverty series."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("contemporary tourism africa theory series.") or ("contemporary port area poverty series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("contemporary tourism africa theory series.") OR ("contemporary port area poverty series."))*.
• Removing quotes may allow a broader search: (( contemporary tourism africa theory series. ) or ( contemporary port area poverty series. ))*.