Perhaps you should try some spelling variations:
contemporary ecotourism » contemporary tourism, contemporary economic, contemporary economics
contemporary tourist » contemporary tourism, contemporary irish, contemporary topics
america country » africa country, armenia country, algeria country
country series » country studies, country surveys, country service

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((contemporary ecotourism) OR (contemporary tourist)) america country series.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((contemporary ecotourism) OR (contemporary tourist)) america country series.".
• Adding a wildcard symbol may retrieve word variants: ((contemporary ecotourism) OR (contemporary tourist)) america country series.*.