Perhaps you should try some spelling variations:
"coder coding sampling allocation problem" » "coder coding sampling location problem" (Expand search), "coder coding damping allocation problem" (Expand search), "coder coding sample allocation problem" (Expand search), "coder crossing sampling allocation problem" (Expand search), "coder using sampling allocation problem" (Expand search), "coder combining sampling allocation problem" (Expand search), "modern coding sampling allocation problem" (Expand search), "color coding sampling allocation problem" (Expand search), "odor coding sampling allocation problem" (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 coding sampling allocation problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coding sampling allocation problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coding sampling allocation problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coding sampling allocation problem") OR ("api python python python programming"))*.