Perhaps you should try some spelling variations:
relation decrease » retention decrease (Expand search), deletion decreased (Expand search), ratio decrease (Expand search)
java programming » and programming (Expand search), based programming (Expand search), goal programming (Expand search)
same relation » some relations (Expand search), state relation (Expand search), space relation (Expand search)
decrease java » decrease and (Expand search), decrease hiv (Expand search), decrease akt (Expand search)
python redes » python regius (Expand search), python code (Expand search)
pon python » on python (Expand search), piton python (Expand search), in python (Expand search)
redes pon » redes p2p (Expand search), redes par (Expand search), redes plc (Expand search)

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

• Removing quotes may allow a broader search: (( same relation decrease java programming ) OR ( python redes pon python programming ))~.