Perhaps you should try some spelling variations:
"based computation _ coverage problem" » "based computational _ coverage problem" (Expand search), "based competition _ coverage problem" (Expand search), "based compilation _ coverage problem" (Expand search), "based computation _ covering problem" (Expand search), "based computation _ covering problems" (Expand search), "based computation _ coverage from" (Expand search)
"using coding python python programming" » "using codigo python python programming" (Expand search), "using codigos python python programming" (Expand search), "using using python python programming" (Expand search), "using coding pythons python programming" (Expand search), "using coding piton python programming" (Expand search), "using coding pitons python programming" (Expand search), "using coping python python programming" (Expand search), "using coating python python programming" (Expand search), "using cooking 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: (("based computation _ coverage problem") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"based computation _ coverage problem\") OR (\"using coding python python programming\"))".
• Removing quotes may allow a broader search: (( based computation _ coverage problem ) OR ( using coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("based computation _ coverage problem") OR ("using coding python python programming"))*.