Perhaps you should try some spelling variations:
"coder coder control vectorial problem" » "coder coder controle vetorial problem" (Expand search), "coder coder controlo vetorial problem" (Expand search), "coder coder control bacterial problem" (Expand search), "coder coder control vectorial role" (Expand search), "coder coder control historical problem" (Expand search), "coder coder control central problem" (Expand search), "coder poder control vectorial problem" (Expand search), "coder encoder control vectorial problem" (Expand search), "coder poder controle vectorial problem" (Expand search), "coder decoder control vectorial problem" (Expand search), "code code control vectorial problem" (Expand search), "decoder codec control vectorial problem" (Expand search)
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ 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 control vectorial problem") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder control vectorial problem\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder control vectorial problem ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder control vectorial problem") OR ("_ python python python programming"))*.