Perhaps you should try some spelling variations:
waste handling » data handling
handling data » sampling data
zhong tai » hong tan, hong hai
zhong zhi » zhang zhi, hong ghi
den weg » dem weg, der weg
ren » rent, rene, rein
minah » minh, minas, mina

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: waste handling data human ((ren yan) OR (den weg)) minah ((zhong tai) OR (zhong zhi)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "waste handling data human ((ren yan) or (den weg)) minah ((zhong tai) OR (zhong zhi)) ;~".
• Adding a wildcard symbol may retrieve word variants: waste handling data human ((ren yan) or (den weg)) minah ((zhong tai) OR (zhong zhi)) ;*.