Perhaps you should try some spelling variations:
"coder coder activity recognition pattern" » "coder coder entity recognition pattern" (Expand search), "coder odor activity recognition pattern" (Expand search), "coder cancer activity recognition pattern" (Expand search), "coder modelo activity recognition pattern" (Expand search), "coder decoder activity recognition pattern" (Expand search), "code code activity recognition pattern" (Expand search), "decoder codec activity recognition pattern" (Expand search)
"on python python python programming" » "on pythons python python programming" (Expand search), "on piton python python programming" (Expand search), "on pitons python python programming" (Expand search), "in python pythin python programming" (Expand search), "of python pythof python programming" (Expand search), "_ python pyth_ 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 activity recognition pattern") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder activity recognition pattern\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder activity recognition pattern ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder activity recognition pattern") OR ("on python python python programming"))*.