Perhaps you should try some spelling variations:
"and comparative python complex problems" » "and comparative method complex problems" (Expand search), "and comparative petiol complex problems" (Expand search), "and comparative methods complex problems" (Expand search), "and comparative python complex projects" (Expand search), "and comparative python computer problems" (Expand search), "and comparative prison complex problems" (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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"and comparative python complex problems\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( and comparative python complex problems ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("and comparative python complex problems") OR ("using coding python python programming"))*.