Perhaps you should try some spelling variations:
"coder decoding and algorithm comparison" » "coder decoding and algorithms comparison" (Expand search), "coding decoding and algorithm comparison" (Expand search), "coder decoder and algorithm comparison" (Expand search), "barcode decoding and algorithm comparison" (Expand search), "coder decoding an algorithm comparison" (Expand search), "coder decoding and algorithmic comparison" (Expand search), "coder recording and algorithm comparison" (Expand search), "coder coding and algorithm comparison" (Expand search), "coder encoding and algorithm comparison" (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 decoding and algorithm comparison\") OR (\"on python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder decoding and algorithm comparison ) OR ( on python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder decoding and algorithm comparison") OR ("on python python python programming"))*.