Perhaps you should try some spelling variations:
copd processes » food processes (Expand search), npd processes (Expand search), coupled processes (Expand search)
diseases copd » disease copd (Expand search), diseases covad (Expand search), diseases could (Expand search)
piton python » pitons python (Expand search), in python (Expand search), with python (Expand search)
decrease at » decrease akt (Expand search), decrease and (Expand search), decrease in (Expand search)
at diseases » cat diseases (Expand search), at disease (Expand search), goat diseases (Expand search)
python code » python coding (Expand search), python redes (Expand search)
code piton » code position (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: "(( decrease at diseases copd processes ) OR ( python code piton python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease at diseases copd processes ) OR ( python code piton python programming ))*.