Perhaps you should try some spelling variations:
demands during » remarks during
water demands » water demand
zhang fang » zhang fan, zhang zhang, zhang yan
yuan water » human water, run water, can water
fang yuan » wang yuhan, wang yan, meng yuan
li zhang » _ zhang
kon a » von a, won a, don a
bon a » bonn a, von a, ben a

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: "li zhang fang yuan water demands during ((kon a) OR (bon a)) ;~".
• Adding a wildcard symbol may retrieve word variants: li zhang fang yuan water demands during ((kon a) OR (bon a)) ;*.