Perhaps you should try some spelling variations:
"diseases drugs effective." » "diseases groups effective.", "diseases drugs affecting.", "diseases davis effective.", "disease drugs effective.", "disease drug effective.", "diseases douglas effective."
"diseases drug effectss." » "diseases drug effects.", "diseases drug effectors.", "diseases drugs effects."
"diseases dogs effects." » "diseases do effects.", "diseases down effects.", "diseases douglas effects.", "diseases dogs effect.", "diseases logs effects.", "diseases doses effects."

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