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

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 ("require higher coverage"))) OR ("requireds high coverage"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"require high coverage\") OR (\"require higher coverage\"))) OR (\"requireds high coverage\"))*".
• Removing quotes may allow a broader search: (((( require high coverage ) OR ( require higher coverage ))) OR ( requireds high coverage ))*.