Perhaps you should try some spelling variations:
reporting based » reporting basic, reporting basics, report based
reporting bias » reporting biases, reporting bugs, reporting beat
reporting base » reporting case, reporting biases, reporting basic
reporting bis » reporting bugs, reporting b, reporting bei

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: "((((reporting bias) OR (reporting bis))) OR (((reporting base) OR (reporting based)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "\"((((reporting bias) or (reporting bis))) or (((reporting base) OR (reporting based))))".
• Removing quotes may allow a broader search: ((((reporting bias) or (reporting bis))) or (((reporting base) OR (reporting based)))).
• Adding a wildcard symbol may retrieve word variants: "((((reporting bias) or (reporting bis))) or (((reporting base) OR (reporting based))))*.