Perhaps you should try some spelling variations:
"coder execution project scheduling problem" » "coder execution production scheduling problem" (Expand search), "coder execution process scheduling problem" (Expand search), "code execution project scheduling problem" (Expand search), "model execution project scheduling problem" (Expand search), "over execution project scheduling problem" (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: (("coder execution project scheduling problem") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder execution project scheduling problem\") OR (\"using coding python python programming\"))".
• Removing quotes may allow a broader search: (( coder execution project scheduling problem ) OR ( using coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder execution project scheduling problem") OR ("using coding python python programming"))*.