Perhaps you should try some spelling variations:
"coder coder in detection problem" » "coder coder in selection problem" (Expand search), "coder coder in prediction problem" (Expand search), "coder coder in collection problem" (Expand search), "coder coder in detecting problem" (Expand search), "coder decoder in detection problem" (Expand search), "code code in detection problem" (Expand search), "decoder codec in detection problem" (Expand search), "coder code in detection problem" (Expand search), "coder codes in detection problem" (Expand search), "coder poder in 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder in detection problem") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder in detection problem\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder in detection problem ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder in detection problem") OR ("on python python python programming"))*.