Perhaps you should try some spelling variations:
"technical reports" » "technical report", "technical results"
"technical support" » "technical report"
"clinical reports" » "clinical results", "clinical response"

Try widening your search to All Fields.

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