Perhaps you should try some spelling variations:
formation teaching » education teaching (Expand search), formal teaching (Expand search)
active programming » reactive programming (Expand search), octave programming (Expand search), adaptive programming (Expand search)
teaching active » teaching action (Expand search), teaching practice (Expand search), teaching activity (Expand search)
code formation » codo formation (Expand search), coke formation (Expand search), cove formation (Expand search)
using coding » using coping (Expand search), using coating (Expand search), using cooking (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: "(( code formation teaching active programming ) OR ( using coding _ python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( code formation teaching active programming ) OR ( using coding _ python programming ))*.