Perhaps you should try some spelling variations:
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ pitons python python programming" (Expand search)
"coder coding on shadow detection" » "modern coding on shadow detection" (Expand search), "color coding on shadow detection" (Expand search), "odor coding on shadow detection" (Expand search), "coder coding of shadow detection" (Expand search), "coder coding in shadow detection" (Expand search), "coder coding an shadow detection" (Expand search), "coder coding on shadows detection" (Expand search), "coder coding own shadow detection" (Expand search)

You may be able to get more results by adjusting your search query.

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