Perhaps you should try some spelling variations:
"trees algorithms" » "tree algorithm", "access algorithms", "treatment algorithms"
"tree algorithms" » "tree algorithm"
"all logarithms" » "math logarithms", "_ logarithms", "all algorithms"

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: (((("trees algorithms") OR ("tree algorithms"))) OR ("all logarithms"))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"trees algorithms\") OR (\"tree algorithms\"))) or (\"all logarithms\"))*".
• Removing quotes may allow a broader search: (((( trees algorithms ) OR ( tree algorithms ))) or ( all logarithms ))*.