Perhaps you should try some spelling variations:
period programming » grid programming (Expand search), method programming (Expand search), end programming (Expand search)
visual programming » fetal programming (Expand search)
based programming » and programming (Expand search), based program (Expand search), cone programming (Expand search)
method period » method derived (Expand search), method method (Expand search), method pid (Expand search)
coder xcode » code code (Expand search), coder decoder (Expand search)
xcode java » codes java (Expand search)
java based » pva based (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: "(( coder xcode java based programming ) OR ( visual programming method period programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( coder xcode java based programming ) OR ( visual programming method period programming ))*.