Perhaps you should try some spelling variations:
"an introduction in copositive programming" » "an introduction in objective programming" (Expand search), "an introduction and copositive programming" (Expand search), "an introduction to copositive programming" (Expand search), "an introduction of copositive programming" (Expand search), "an introduction in positive programming" (Expand search)
"advanced python python computer programming" » "advanced python python computer program" (Expand search), "advanced python python computer programs" (Expand search), "advanced method python computer programming" (Expand search), "advanced path python computer programming" (Expand search), "advanced symphony python computer programming" (Expand search), "advanced pythons python computer programming" (Expand search), "advanced piton python computer programming" (Expand search), "advanced pitons python computer 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: "((\"an introduction in copositive programming\") OR (\"advanced python python computer programming\"))~".
• Removing quotes may allow a broader search: (( an introduction in copositive programming ) OR ( advanced python python computer programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("an introduction in copositive programming") OR ("advanced python python computer programming"))*.