Perhaps you should try some spelling variations:
"coder decoder coder location problem" » "coder decoder model location problem" (Expand search), "coder decoder over location problem" (Expand search), "coder decoder under location problem" (Expand search), "encoder decoder coder location problem" (Expand search), "coder decoder codec location problem" (Expand search), "coder decoder codecs location 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 decoder coder location problem") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder decoder coder location problem\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder decoder coder location problem ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder decoder coder location problem") OR ("on python python python programming"))*.