Perhaps you should try some spelling variations:
earthscan supporting » artiklar supporting
"Earthscan supporting services." » "Earthscan support services.", "Earthscan exporting services."
"earthscan expert series." » "earthscan forest series.", "earthscan express series.", "earthscan report series.", "earthscan expert survey."

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: (("earthscan expert series.") OR ("Earthscan supporting services."))~.
• Removing quotes may allow a broader search: (( earthscan expert series. ) or ( Earthscan supporting services. ))~.
• Adding a wildcard symbol may retrieve word variants: (("earthscan expert series.") or ("Earthscan supporting services."))*.