Perhaps you should try some spelling variations:
"functions representation _ java programing" » "functions representation _ java programming" (Expand search), "functions representation _ java programs" (Expand search), "functions representation _ meta programming" (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: (("functions representation _ java programing") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"functions representation _ java programing\") OR (\"using coding python python programming\"))".
• Removing quotes may allow a broader search: (( functions representation _ java programing ) OR ( using coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("functions representation _ java programing") OR ("using coding python python programming"))*.