Perhaps you should try some spelling variations:
"coder implementation and housing problem" » "code implementation and housing problem" (Expand search), "decoder implementation and housing problem" (Expand search), "model implementation and housing problem" (Expand search), "coder implementation of housing problem" (Expand search), "coder implementation and housing problems" (Expand search), "coder implementation and routing problem" (Expand search), "coder implementation and housing program" (Expand search)
"python codigo python python programming" » "python coding python python programming" (Expand search), "python code python python programming" (Expand search), "python codigo pythons python programming" (Expand search), "python codigo piton python programming" (Expand search), "python codigo pitons 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: "((\"coder implementation and housing problem\") OR (\"python codigo python python programming\"))~".
• Removing quotes may allow a broader search: (( coder implementation and housing problem ) OR ( python codigo python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder implementation and housing problem") OR ("python codigo python python programming"))*.