Perhaps you should try some spelling variations:
formen beim » reformen beim, formen im, forschen beim
die formen » die folgen
yan liang » yang liang, wang liang, you liang
liang die » klang die, liang dan, liang li
david ng » david g, david a, david _
wai yan » wang yan, wei yang
david n » david a, david _, david k

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

• Performing a fuzzy search may retrieve terms with similar spellings: wai yan liang die formen beim ((david ng) OR (david n)) hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wai yan liang die formen beim ((david ng) OR (david n)) hai ;*".