Perhaps you should try some spelling variations:
"coder optimization algorithm teaching problems" » "code optimization algorithm teaching problems" (Expand search), "modern optimization algorithm teaching problems" (Expand search), "powder optimization algorithm teaching problems" (Expand search), "coder optimization algorithms teaching problems" (Expand search), "coder optimization algorithmic teaching problems" (Expand search), "coder optimization algorithm learning problems" (Expand search), "coder optimization algorithm teaching problem" (Expand search), "coder optimization algorithm teaching process" (Expand search), "coder optimization algorithm packing problems" (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), "rpa python python python programming" (Expand search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder optimization algorithm teaching problems\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder optimization algorithm teaching problems ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder optimization algorithm teaching problems") OR ("api python python python programming"))*.