Perhaps you should try some spelling variations:
"by computation using completion problems" » "by computation using completion problem" (Expand search), "by computation using complex problems" (Expand search), "by computation using conduction problems" (Expand search), "by computations using completion problems" (Expand search), "by computation in completion problems" (Expand search), "by composition using completion problems" (Expand search), "by computation using compilation problems" (Expand search), "by computation using compression problems" (Expand search), "by computation using complete problems" (Expand search), "by computational using completion problems" (Expand search), "of computation using completion problems" (Expand search), "_ computation using completion problems" (Expand search)
"using codigo python python programming" » "using codigo pythons python programming" (Expand search), "using codigo piton python programming" (Expand search), "using codigo pitons python programming" (Expand search), "using indigo python python programming" (Expand search), "using coding python python programming" (Expand search), "using codium 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: "((\"by computation using completion problems\") OR (\"using codigo python python programming\"))~".
• Removing quotes may allow a broader search: (( by computation using completion problems ) OR ( using codigo python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("by computation using completion problems") OR ("using codigo python python programming"))*.