Perhaps you should try some spelling variations:
"token sampling" » "modern sampling", "frozen sampling", "pollen sampling"
"token jumping" » "time jumping", "lakes jumping", "maker jumping"
"ski jumping" » "skin jumping", "skip jumping"

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: (("ski jumping") OR ((("token jumping") OR ("token sampling")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"ski jumping\") or (((\"token jumping\") OR (\"token sampling\"))))".
• Removing quotes may allow a broader search: (( ski jumping ) or ((( token jumping ) OR ( token sampling )))).
• Adding a wildcard symbol may retrieve word variants: (("ski jumping") or ((("token jumping") OR ("token sampling"))))*.