Perhaps you should try some spelling variations:
"coder precoder string genetic programming" » "coder decoder string genetic programming" (Expand search), "coder precoder strong genetic programming" (Expand search), "coder precoder sorting genetic programming" (Expand search), "coder precoder strains genetic programming" (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 precoder string genetic programming") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder string genetic programming\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder string genetic programming ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder string genetic programming") OR ("on python python python programming"))*.