Perhaps you should try some spelling variations:
"coder precoder using packing problems" » "coder precoder using packing problem" (Expand search), "coder precoder using solving problems" (Expand search), "coder decoder using packing problems" (Expand search), "coder precoding using packing problems" (Expand search), "coder promoter using packing problems" (Expand search), "coder precoder using stacking problems" (Expand search), "coder precoder using tracking problems" (Expand search), "coder precoder using ranking 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), "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 precoder using packing problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder using packing problems\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder using packing problems ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder using packing problems") OR ("api python python python programming"))*.