Perhaps you should try some spelling variations:
peptone complexity » tone complexity (Expand search), sentence complexity (Expand search), response complexity (Expand search)
coupling methods » cooling methods (Expand search), counting methods (Expand search), culling methods (Expand search)
using coupling » running coupling (Expand search), using competing (Expand search), using coupled (Expand search)
methods python » methods action (Expand search), pythons python (Expand search), methods method (Expand search)
coded » codes (Expand search)

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

• Removing quotes may allow a broader search: (( coded peptone complexity control program ) OR ( using coupling methods python programming ))~.