Perhaps you should try some spelling variations:
"deutsches problem kreuz / history / 18th century" » "deutsche probleme kreuz / history / 18th century", "ethisches problem kreuz / history / 18th century", "deutschland probleme kreuz / history / 18th century", "deutsches problem keun / history / 18th century", "deutsches problem kaluza / history / 18th century", "deutsches problem key / history / 18th century"
"deutsches modell kreuz / history / 18th century" » "deutsche modell kreuz / history / 18th century", "deutschen modell kreuz / history / 18th century", "deutschen modells kreuz / history / 18th century", "deutsches modell krise / history / 18th century"
"deutsches muster kreuz / history / 18th century" » "deutsches museum kreuz / history / 18th century", "deutsches register kreuz / history / 18th century", "deutschland muster kreuz / history / 18th century", "deutsches muster kreis / history / 18th century", "deutsches uber kreuz / history / 18th century"
"deutsches rotes kreuz / history / 18th century" » "deutsche rote kreuz / history / 18th century", "deutsches patent kreuz / history / 18th century", "deutsches reichs kreuz / history / 18th century", "deutsches rote kreuz / history / 18th century", "deutsches roten kreuzes / history / 18th century"
"deutschen roten kreuz / history / 18th century" » "deutschen rates kreuz / history / 18th century", "deutschen rechte kreuz / history / 18th century", "deutschen rote kreuz / history / 18th century", "deutschen roten kreuzes / history / 18th century"

Try widening your search to All Fields.

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: (((((((("deutsches rotes kreuz / history / 18th century") OR ("deutsches modell kreuz / history / 18th century"))) OR ("deutsches muster kreuz / history / 18th century"))) OR ("deutschen roten kreuz / history / 18th century"))) OR ("deutsches problem kreuz / history / 18th century")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((((\"deutsches rotes kreuz / history / 18th century\") OR (\"deutsches modell kreuz / history / 18th century\"))) or (\"deutsches muster kreuz / history / 18th century\"))) or (\"deutschen roten kreuz / history / 18th century\"))) or (\"deutsches problem kreuz / history / 18th century\"))".
• Removing quotes may allow a broader search: (((((((( deutsches rotes kreuz / history / 18th century ) OR ( deutsches modell kreuz / history / 18th century ))) or ( deutsches muster kreuz / history / 18th century ))) or ( deutschen roten kreuz / history / 18th century ))) or ( deutsches problem kreuz / history / 18th century )).
• Adding a wildcard symbol may retrieve word variants: (((((((("deutsches rotes kreuz / history / 18th century") OR ("deutsches modell kreuz / history / 18th century"))) or ("deutsches muster kreuz / history / 18th century"))) or ("deutschen roten kreuz / history / 18th century"))) or ("deutsches problem kreuz / history / 18th century"))*.