Perhaps you should try some spelling variations:
"disease drugs effective." » "disease groups effective.", "disease drugs affecting.", "disease davis effective.", "diseases drug effective.", "disease d.g effective.", "disease does effective.", "diseases drugs effective."
"disease drug effectss." » "disease drug effects.", "disease drug effectors.", "disease drugs effects.", "diseases drug effectss."
"diseases drag effect." » "diseases drug effect.", "diseases drugs effect.", "diseases dr effect.", "diseases drag effects.", "diseases dag effect.", "diseases dung effect."

Try widening your search to All Fields.

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

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