Perhaps you should try some spelling variations:
"an introduction to robot programming" » "an introduction to robots programming" (Expand search), "an introduction to goal programming" (Expand search), "an introduction to cone programming" (Expand search), "an introduction to robotic programming" (Expand search), "an introduction _ robot programming" (Expand search), "an introduction to robot programaming" (Expand search)
"advanced python python computer program" » "advanced method python computer program" (Expand search), "advanced path python computer program" (Expand search), "advanced symphony python computer program" (Expand search), "advanced pythons python computer program" (Expand search), "advanced piton python computer program" (Expand search), "advanced pitons python computer program" (Expand search), "advanced python python computer programa" (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 to robot programming\") OR (\"advanced python python computer program\"))~".
• Removing quotes may allow a broader search: (( an introduction to robot programming ) OR ( advanced python python computer program ))~.
• Adding a wildcard symbol may retrieve word variants: (("an introduction to robot programming") OR ("advanced python python computer program"))*.