Perhaps you should try some spelling variations:
"diseases drugs effectss." » "diseases drug effectss.", "disease drugs effectss.", "disease drug effectss.", "diseases drugs effects.", "diseases drug effects.", "diseases drugs effective."
"diseases due effect." » "diseases drug effect.", "diseases diet effect.", "diseases case effect.", "diseases dose effect.", "diseases edge effect.", "diseases eae effect."
"diseases age effect." » "diseases case effect.", "diseases a effect.", "diseases acute effect.", "diseases age effects.", "diseases algae effect.", "diseases wage 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 effectss.") or ((("diseases due effect.") OR ("diseases age effect."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("diseases drugs effectss.") OR ((("diseases due effect.") OR ("diseases age effect.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"diseases drugs effectss.\") or (((\"diseases due effect.\") OR (\"diseases age effect.\"))))".
• Removing quotes may allow a broader search: (( diseases drugs effectss. ) or ((( diseases due effect. ) OR ( diseases age effect. )))).
• Adding a wildcard symbol may retrieve word variants: (("diseases drugs effectss.") or ((("diseases due effect.") OR ("diseases age effect."))))*.