Perhaps you should try some spelling variations:
"coder coder doing packing problems" » "coder coder doing packing problem" (Expand search), "coder coder doing solving problems" (Expand search), "coder coder doing routing problems" (Expand search), "coder coder aging packing problems" (Expand search), "coder coder doing teaching problems" (Expand search), "coder coder bin packing problems" (Expand search), "coder decoder doing packing problems" (Expand search), "code code doing packing problems" (Expand search), "decoder codec doing packing problems" (Expand search), "coder codes going packing problems" (Expand search), "coder modelo doing packing problems" (Expand search), "coder coders using 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder doing packing problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder doing packing problems\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder doing packing problems ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder doing packing problems") OR ("api python python python programming"))*.