Perhaps you should try some spelling variations:
"cover the samples from coverage" » "cover the samples flow coverage" (Expand search), "cover the samples crop coverage" (Expand search), "cover the samples from beverage" (Expand search), "cover the sample from coverage" (Expand search), "cover the examples from coverage" (Expand search), "cover the sampling from coverage" (Expand search), "uncover the samples from coverage" (Expand search), "cover to samples from coverage" (Expand search), "covering the samples from coverage" (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: (("cover the samples from coverage") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"cover the samples from coverage\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( cover the samples from coverage ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("cover the samples from coverage") OR ("_ python python python programming"))*.