Perhaps you should try some spelling variations:
"coder code and detection problem" » "coder code and selection problem" (Expand search), "coder code and detection program" (Expand search), "coder code and demarcation problem" (Expand search), "code code and detection problem" (Expand search), "modern code and detection problem" (Expand search), "color code and detection problem" (Expand search)
"on python python python programming" » "on pythons python python programming" (Expand search), "on piton python python programming" (Expand search), "on pitons python python programming" (Expand search), "in python pythin python programming" (Expand search), "of python pythof python programming" (Expand search), "_ python pyth_ 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 code and detection problem\") OR (\"on python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder code and detection problem ) OR ( on python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder code and detection problem") OR ("on python python python programming"))*.