Perhaps you should try some spelling variations:
wei reformen » der reformen, den reformen, iii reformen
reformen jan » reformen von, reformen a, reformen nach
you zhang » you change, you liang, yan zhang
zhang wei » zhen wei
david ng » david g, david n, david a
wan you » want you, warn you, can you

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "wan you zhang wei reformen jan ((david hong) OR (david ng)) hai ;~".
• Adding a wildcard symbol may retrieve word variants: wan you zhang wei reformen jan ((david hong) OR (david ng)) hai ;*.