Perhaps you should try some spelling variations:
"disease drugs effectss." » "disease drugs effects.", "disease drug effects.", "disease drugs effective.", "disease drug effectss.", "disease d.g effectss.", "disease does effectss."
"diseases dogs effectss." » "diseases drugs effectss.", "diseases do effectss.", "diseases down effectss.", "diseases dogs effect.", "diseases logs effects.", "diseases drugs effects."
"diseases drug effect." » "diseases drug effects.", "diseases drag effect.", "diseases drugs effects."

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("disease drugs effectss.") OR ("diseases dogs effectss."))) OR ("diseases drug effect."))~.
• Removing quotes may allow a broader search: (((( disease drugs effectss. ) or ( diseases dogs effectss. ))) or ( diseases drug effect. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("disease drugs effectss.") or ("diseases dogs effectss."))) or ("diseases drug effect."))*.