Perhaps you should try some spelling variations:
"odor coding and defense coding" » "odor coding and defense closing" (Expand search), "odor coding and dense coding" (Expand search), "odor coding and defense code" (Expand search), "color coding and defense coding" (Expand search), "odor binding and defense coding" (Expand search), "odor coding rna defense coding" (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: (("odor coding and defense coding") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"odor coding and defense coding\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( odor coding and defense coding ) OR ( api python python python programming ))*.