Perhaps you should try some spelling variations:
"african american periodicals cited." » "african america periodicals cited." (Expand Search), "african american periodical cited." (Expand Search), "african africa periodicals cited." (Expand Search), "african american periodicals etc." (Expand Search), "african american periodicals index." (Expand Search)
"african americans medieval life." » "african american media life." (Expand Search)
"african americans african case." » "african africans africa case." (Expand Search), "african america africa case." (Expand Search), "african americans african coast." (Expand Search), "african americans african based." (Expand Search), "african americans african fast." (Expand Search)
"african americans medical life." » "african american media life." (Expand Search), "african moroccans medical life." (Expand Search), "african americans magical life." (Expand Search), "african americans medical care." (Expand Search), "african americans ethical life." (Expand Search)
"african americans medical copte." » "african american media copte." (Expand Search), "african moroccans medical copte." (Expand Search), "african americans medical content." (Expand Search), "african americans medical context." (Expand Search), "african americans medical care." (Expand Search)
"african medicine medieval life." » "asian medicine medieval life." (Expand Search), "avian medicine medieval life." (Expand Search), "roman medicine medieval life." (Expand Search)

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: (((("african americans african case.") OR ("african american periodicals cited."))) OR ((((("african americans medical life.") OR ((("african americans medieval life.") OR ("african medicine medieval life."))))) OR ("african americans medical copte."))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"african americans african case.\") or (\"african american periodicals cited.\"))) or (((((\"african americans medical life.\") or (((\"african americans medieval life.\") OR (\"african medicine medieval life.\"))))) or (\"african americans medical copte.\"))))~".
• Removing quotes may allow a broader search: (((( african americans african case. ) or ( african american periodicals cited. ))) or ((((( african americans medical life. ) or ((( african americans medieval life. ) OR ( african medicine medieval life. ))))) or ( african americans medical copte. ))))~.
• Adding a wildcard symbol may retrieve word variants: (((("african americans african case.") or ("african american periodicals cited."))) or ((((("african americans medical life.") or ((("african americans medieval life.") OR ("african medicine medieval life."))))) or ("african americans medical copte."))))*.