Perhaps you should try some spelling variations:
"river revetment analysis." » "river investment analysis.", "river element analysis.", "river pavement analysis.", "river development analysis."
"river movement analysis." » "river element analysis.", "river document analysis.", "river investment analysis.", "rover movement analysis.", "drive movement analysis.", "tiger movement analysis."
"five plants analysis." » "fibre plants analysis.", "rice plants analysis.", "free plants analysis."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("river revetment analysis.") OR ("river movement analysis."))) or ("five plants analysis."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("river revetment analysis.") OR ("river movement analysis."))) OR ("five plants analysis."))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"river revetment analysis.\") OR (\"river movement analysis.\"))) or (\"five plants analysis.\"))*".
• Removing quotes may allow a broader search: (((( river revetment analysis. ) OR ( river movement analysis. ))) or ( five plants analysis. ))*.