Perhaps you should try some spelling variations:
"coder coder competence c programming" » "coder core competence c programming" (Expand search), "coder under competence c programming" (Expand search), "coder reader competence c programming" (Expand search), "coder coder competence _ programming" (Expand search), "coder coder competence cone programming" (Expand search), "coder coder competence and programming" (Expand search), "coder coder competence 3 programming" (Expand search), "coder coder competence 5 programming" (Expand search), "coder decoder competence c programming" (Expand search), "code code competence c programming" (Expand search), "decoder codec competence c 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 coder competence c programming") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder competence c programming\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder competence c programming ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder competence c programming") OR ("on python python python programming"))*.