Perhaps you should try some spelling variations:
functions complexity » functional complexity (Expand search), fiction complexity (Expand search), functions complex (Expand search)
teaching functions » teaching fractions (Expand search), teaching actions (Expand search), teaching conceptions (Expand search)
coding teaching » cloning teaching (Expand search), doing teaching (Expand search), modeling teaching (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pytm python (Expand search)
coder coding » modern coding (Expand search), color coding (Expand search), odor coding (Expand search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( coder coding teaching functions complexity ) OR ( _ pitons python python programming ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( coder coding teaching functions complexity ) OR ( _ pitons python python programming ))".
• Adding a wildcard symbol may retrieve word variants: (( coder coding teaching functions complexity ) OR ( _ pitons python python programming ))*.