Perhaps you should try some spelling variations:
waste handling » data handling
handling data » sampling data
zhong tai » hong tan, hong hai, zhong zhi
data hua » data hub, data human, data how
ren kang » ren yan
jin kang » jin chang, jin kyung, jing fang
ren weng » den weg

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

• Performing a fuzzy search may retrieve terms with similar spellings: waste handling data hua ((((ren kang) OR (jin kang))) or (ren weng)) minah zhong tai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: waste handling data hua ((((ren kang) OR (jin kang))) OR (ren weng)) minah zhong tai ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "waste handling data hua ((((ren kang) OR (jin kang))) or (ren weng)) minah zhong tai ;*".