Perhaps you should try some spelling variations:
"lake document structure analysis" » "lake document structural analysis", "lakes document structure analysis", "dake document structure analysis", "fake document structure analysis"
"line segment based analysis" » "line fragment based analysis", "line segments based analysis"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"lake document structure analysis\") OR (\"line segment based analysis\"))".
• Removing quotes may allow a broader search: (( lake document structure analysis ) OR ( line segment based analysis )).
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