Perhaps you should try some spelling variations:
"diseases donald effects." » "diseases ronald effects.", "diseases renal effects.", "diseases dale effects.", "diseases load effects."
"diseases donna effects." » "diseases do effects.", "diseases denis effects.", "diseases douglas effects.", "diseases data effects.", "diseases china effects.", "diseases dna effect."
"diseases drag effect." » "diseases drug effect.", "diseases drugs effect.", "diseases dr effect.", "diseases drag effects.", "diseases dag effect.", "diseases dung effect."

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: (((("diseases donna effects.") OR ("diseases donald effects."))) OR ("diseases drag effect."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"diseases donna effects.\") OR (\"diseases donald effects.\"))) or (\"diseases drag effect.\"))~".
• Removing quotes may allow a broader search: (((( diseases donna effects. ) OR ( diseases donald effects. ))) or ( diseases drag effect. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("diseases donna effects.") OR ("diseases donald effects."))) or ("diseases drag effect."))*.