Perhaps you should try some spelling variations:
"diseases drugs effective." » "diseases groups effective.", "diseases drugs affecting.", "diseases davis effective.", "diseases drug effective.", "disease drugs effective.", "diseases dogs effective."
"disease drug effectss." » "disease drug effects.", "disease drug effectors.", "disease drugs effects.", "diseases drug effectss."
"diseases drag effect." » "diseases drug effect.", "diseases dr effect.", "diseases dna 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 ("diseases drugs effective."))) or ("diseases drag effect."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("disease drug effectss.") OR ("diseases drugs effective."))) OR ("diseases drag effect.")).
• Removing quotes may allow a broader search: (((( disease drug effectss. ) or ( diseases drugs effective. ))) or ( diseases drag effect. )).
• Adding a wildcard symbol may retrieve word variants: (((("disease drug effectss.") or ("diseases drugs effective."))) or ("diseases drag effect."))*.