Perhaps you should try some spelling variations:
"using complexity using sampling errors" » "using complex using sampling errors" (Expand search), "using complete using sampling errors" (Expand search), "design complexity using sampling errors" (Expand search), "using complexity during sampling errors" (Expand search), "using complexity un sampling errors" (Expand search), "using complexity user sampling errors" (Expand search), "using complexity using sampling error" (Expand search), "using complexity using sampling effort" (Expand search), "using complexity using spelling errors" (Expand search), "using complexity using subsampling errors" (Expand search), "using complexity using saline errors" (Expand search), "using complexity using samples errors" (Expand search)
"using coding python python programming" » "using codigo python python programming" (Expand search), "using codigos python python programming" (Expand search), "using using python python programming" (Expand search), "using coding pythons python programming" (Expand search), "using coding piton python programming" (Expand search), "using coding pitons python programming" (Expand search), "using coping python python programming" (Expand search), "using coating python python programming" (Expand search), "using cooking 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: "((\"using complexity using sampling errors\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( using complexity using sampling errors ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("using complexity using sampling errors") OR ("using coding python python programming"))*.