Perhaps you should try some spelling variations:
"based computation using controller problem" » "based computation using control problem" (Expand search), "based computation using controller role" (Expand search), "based computation using controlled probe" (Expand search), "based computational using controller problem" (Expand search), "based competition using controller problem" (Expand search), "based compilation using controller problem" (Expand search), "based computations using controller problem" (Expand search), "based computation in controller problem" (Expand search), "based composition using controller problem" (Expand search), "based computation using controlled problem" (Expand search), "based computation tuning controller problem" (Expand search), "based computation during controlled 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.

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