Perhaps you should try some spelling variations:
"coder coder using optical preprocessing" » "coder coder using optimal preprocessing" (Expand search), "coder coder using optical processing" (Expand search), "coder coder using optimal processing" (Expand search), "coder decoder using optical preprocessing" (Expand search), "code code using optical preprocessing" (Expand search), "decoder codec using optical preprocessing" (Expand search), "coder coders using optical preprocessing" (Expand search), "coder cover using optical preprocessing" (Expand search), "coder code using optical preprocessing" (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)

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 using optical preprocessing") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder using optical preprocessing\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder using optical preprocessing ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder using optical preprocessing") OR ("api python python python programming"))*.