Perhaps you should try some spelling variations:
yang liang » wang liang, yan liang, yang yang
liang dali » liang dan, liang li, yang dali
formel die » formen die, forme de, form die
former die » formen die, forme de, form die
form einer » form eines, formen eines
wang yang » wang yan, wang liang, wang yanling
a hai » _ hai, a ham

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang liang dali ((((formel die) OR (former die))) or (form einer)) david a hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang liang dali ((((formel die) OR (former die))) OR (form einer)) david a hai ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang liang dali ((((formel die) OR (former die))) or (form einer)) david a hai ;*".