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