Perhaps you should try some spelling variations:
zen » zehn
zeng » zehng, eng, feng, meng
zehng » zeheng, zehn, zehnt
peng » png, pen
behend » behende, gehend, beheld
gehende » 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 peng))) OR (behend OR gehende)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((zen or (zehng or (zeng OR peng))) or (behend or gehende))".
• Adding a wildcard symbol may retrieve word variants: ((zen or (zehng or (zeng OR peng))) or (behend or gehende))*.