Perhaps you should try some spelling variations:
zen » zehn
zeng » zehng, eng, feng, peng
zehng » zeheng, zehn, zehnt
behend » behende, beheld, sehend
gehend » gehenden
gehende » gehendene, angehende

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: ((zen OR (zehng OR zeng)) OR ((behend OR gehend) OR gehende)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((zen or (zehng or zeng)) or ((behend OR gehend) or gehende))".
• Adding a wildcard symbol may retrieve word variants: ((zen or (zehng or zeng)) or ((behend OR gehend) or gehende))*.