Perhaps you should try some spelling variations:
"preface tectonic" » "preface technical", "preface mechanics", "preface section"
"surge tectonics" » "surge tectonic", "6.9surge tectonics", "wedge tectonics"
"plate tectonics" » "plates tectonics", "place 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 ((("surge tectonics") OR ("preface tectonic")))).
• Removing quotes may allow a broader search: (( plate tectonics ) or ((( surge tectonics ) or ( preface tectonic )))).
• Adding a wildcard symbol may retrieve word variants: (("plate tectonics") or ((("surge tectonics") or ("preface tectonic"))))*.