Perhaps you should try some spelling variations:
"coder precoder aptica linear programming" » "coder decoder aptica linear programming" (Expand search), "coder precoder optica linear programming" (Expand search), "coder precoder opticas linear programming" (Expand search), "coder precoder optico linear programming" (Expand search)
"in python python python programming" » "in pythons python python programming" (Expand search), "in piton python python programming" (Expand search), "in pitons python python programming" (Expand search), "_ python python 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 aptica linear programming") OR ("in python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder aptica linear programming\") OR (\"in python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder aptica linear programming ) OR ( in python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder aptica linear programming") OR ("in python python python programming"))*.