Perhaps you should try some spelling variations:
"odor coding on process protocol" » "odor coding on process protocolo" (Expand search), "odor coding on processing protocol" (Expand search), "odor coding on processos protocolo" (Expand search), "color coding on process protocol" (Expand search), "odor binding on process protocol" (Expand search), "odor coding of process protocol" (Expand search), "odor coding in process protocol" (Expand search), "odor coding an process protocol" (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 on process protocol") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"odor coding on process protocol\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( odor coding on process protocol ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("odor coding on process protocol") OR ("api python python python programming"))*.