Perhaps you should try some spelling variations:
"union bulgaren four OR cour OR fur la paix et four OR cour OR fur la societe des nations*" » "union bulgarien four OR cour OR fur la paix et four OR cour OR fur la societe des nations*" (Expand Search), "union bulgaren our OR cour OR fur la paix et our OR cour OR fur la societe des nations*" (Expand Search), "union bulgaren pour OR cour OR fur la paix et pour OR cour OR fur la societe des nations*" (Expand Search), "union bulgaren four OR cour OR fur la paix et four OR cour OR fur la society des nations*" (Expand Search), "union bulgaren four OR cour OR fur la paix et four OR cour OR fur la societa des nations*" (Expand Search), "union bulgaren four OR cour OR fur la paix et four OR cour OR fur la societe des nation*" (Expand Search), "union bulgaren four OR cour OR fur la paix et four OR cour OR fur la societe des nationen*" (Expand Search)

You may be able to get more results by adjusting your search query.

• Removing quotes may allow a broader search: union bulgaren ((four OR cour) OR fur) la paix et ((four OR cour) OR fur) la societe des nations*.