Perhaps you should try some spelling variations:
"coder arc routing algorithms simulation" » "coder arc routing algorithm simulation" (Expand search), "coder arc clustering algorithms simulation" (Expand search), "codes marc routing algorithms simulation" (Expand search), "code art routing algorithms simulation" (Expand search), "code are routing algorithms simulation" (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), "manim 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 arc routing algorithms simulation") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder arc routing algorithms simulation\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder arc routing algorithms simulation ) OR ( api python python python programming ))*.