Perhaps you should try some spelling variations:
earthscan expert » earthscan forest
"earthscan export services." » "earthscan exports services.", "earthscan export service.", "earthscan port services."
"Earthscan expert series." » "Earthscan express series.", "Earthscan report series.", "Earthscan expert survey."
"Earthscan paper series." » "Earthscan cover series."

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("Earthscan expert series.") OR ("Earthscan paper series."))) or ("earthscan export services."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("Earthscan expert series.") OR ("Earthscan paper series."))) OR ("earthscan export services.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"Earthscan expert series.\") OR (\"Earthscan paper series.\"))) or (\"earthscan export services.\"))".
• Removing quotes may allow a broader search: (((( Earthscan expert series. ) OR ( Earthscan paper series. ))) or ( earthscan export services. )).
• Adding a wildcard symbol may retrieve word variants: (((("Earthscan expert series.") OR ("Earthscan paper series."))) or ("earthscan export services."))*.