Perhaps you should try some spelling variations:
"data compression and generalized array" » "data compression and generalized arma" (Expand search), "data compression and generalized airy" (Expand search), "data compression and generalized early" (Expand search), "data comprehension and generalized array" (Expand search), "data compression of generalized array" (Expand search), "data compression in generalized array" (Expand search), "data compression _ generalized array" (Expand search)
"using python python python programming" » "using pythons python python programming" (Expand search), "using piton python python programming" (Expand search), "using pitons python python programming" (Expand search), "usando python python python programming" (Expand search), "in python 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: "((\"data compression and generalized array\") OR (\"using python python python programming\"))~".
• Removing quotes may allow a broader search: (( data compression and generalized array ) OR ( using python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("data compression and generalized array") OR ("using python python python programming"))*.