Perhaps you should try some spelling variations:
"internationale umgang case reports" » "internationale tagung case reports", "internationale aufgabe case reports", "internationale und case reports", "internationale umgang case report", "internationale umgang case reporting", "internationale umgang panel reports", "internationale dumping case reports"
"international labour tables reports" » "international law tables reports", "international labour articles reports", "international labour table reports", "international labour taxes reports", "international labour james reports"

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: (("international labour tables reports") OR ("internationale umgang case reports"))~.
• Removing quotes may allow a broader search: (( international labour tables reports ) or ( internationale umgang case reports ))~.
• Adding a wildcard symbol may retrieve word variants: (("international labour tables reports") or ("internationale umgang case reports"))*.