Perhaps you should try some spelling variations:
"coder coder coverage basis function" » "coder code coverage basis function" (Expand search), "coder cancer coverage basis function" (Expand search), "coder center coverage basis function" (Expand search), "coder coder coverage based function" (Expand search), "coder coder coverage bags function" (Expand search), "coder coder coverage brazil function" (Expand search), "coder coder coverage basis functions" (Expand search), "coder decoder coverage basis function" (Expand search), "code code coverage basis function" (Expand search), "decoder codec coverage basis function" (Expand search)
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ pitons python python programming" (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: (("coder coder coverage basis function") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder coverage basis function\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder coverage basis function ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder coverage basis function") OR ("_ python python python programming"))*.