Perhaps you should try some spelling variations:
"require high coverage" » "requires high coverage" (Expand Search), "require high average" (Expand Search)
"requireds high coverage" » "requiresds high coverage" (Expand Search), "requireds high average" (Expand Search), "requires high coverage" (Expand Search)
"required higher coverage" » "requiresd higher coverage" (Expand Search), "required higher average" (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("require high coverage") OR ((("requireds high coverage") OR ("required higher coverage"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"require high coverage\") OR (((\"requireds high coverage\") OR (\"required higher coverage\"))))".
• Removing quotes may allow a broader search: (( require high coverage ) OR ((( requireds high coverage ) OR ( required higher coverage )))).
• Adding a wildcard symbol may retrieve word variants: (("require high coverage") OR ((("requireds high coverage") OR ("required higher coverage"))))*.