Perhaps you should try some spelling variations:
"coder coverage on logic programming" » "code coverage on logic programming" (Expand search), "cancer coverage on logic programming" (Expand search), "center coverage on logic programming" (Expand search), "coder coverage of logic programming" (Expand search), "coder coverage in logic programming" (Expand search), "coder coverage and logic programming" (Expand search), "coder coverage on logical programming" (Expand search), "coder coverage on log programming" (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 coverage on logic programming") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coverage on logic programming\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coverage on logic programming ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coverage on logic programming") OR ("_ python python python programming"))*.