Perhaps you should try some spelling variations:
"advanced implementation of contract problem" » "advancing implementation of contract problem" (Expand search), "and implementation of contract problem" (Expand search), "based implementation of contract problem" (Expand search), "advanced implementation of contact problem" (Expand search), "advanced implementation of constrant problem" (Expand search), "advanced implementation of contact problems" (Expand search), "advanced implementation of contracts 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: (("advanced implementation of contract problem") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced implementation of contract problem\") OR (\"using coding python python programming\"))".
• Removing quotes may allow a broader search: (( advanced implementation of contract problem ) OR ( using coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("advanced implementation of contract problem") OR ("using coding python python programming"))*.