Perhaps you should try some spelling variations:
"plates tectonics" » "plate tectonic", "lakes tectonic", "paleo tectonics"
"slice tectonics" » "scale tectonics", "surge tectonics", "active tectonics"
"place tectonic" » "plate tectonic", "preface tectonic", "clans tectonic"
"slip tectonics" » "salt tectonics", "iii tectonics", "deep tectonics"

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: (((("plate tectonics") OR ("plates tectonics"))) OR ((("place tectonic") OR ((("slice tectonics") OR ("slip tectonics")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"plate tectonics\") OR (\"plates tectonics\"))) or (((\"place tectonic\") or (((\"slice tectonics\") or (\"slip tectonics\"))))))".
• Removing quotes may allow a broader search: (((( plate tectonics ) OR ( plates tectonics ))) or ((( place tectonic ) or ((( slice tectonics ) or ( slip tectonics )))))).
• Adding a wildcard symbol may retrieve word variants: (((("plate tectonics") OR ("plates tectonics"))) or ((("place tectonic") or ((("slice tectonics") or ("slip tectonics"))))))*.