Perhaps you should try some spelling variations:
"coder coder concepts _ programming" » "coder modern concepts _ programming" (Expand search), "coder core concepts _ programming" (Expand search), "coder code concept _ programming" (Expand search), "coder decoder concepts _ programming" (Expand search), "code code concepts _ programming" (Expand search), "decoder codec concepts _ programming" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons 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 coder concepts _ programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder concepts _ programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder concepts _ programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder concepts _ programming") OR ("api python python python programming"))*.