Perhaps you should try some spelling variations:
wang handling » wang yanling, cargo handling, waste handling
chen shuang » chen chuan, chen chung, chen huigang
jeong hyeok » jeong dahyeon
shuang min » chang min, huang bin, huang lin
yang yang » wang yang, wang yan
min jeong » kin keong, min hong, mun leong
yi hua » li hua, yi hui, ying hua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang yang) or (wang handling)) ((yi hua) OR (ya hua)) chen shuang min jeong hyeok ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (wang handling)) ((yi hua) OR (ya hua)) chen shuang min jeong hyeok ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang yang) or (wang handling)) ((yi hua) OR (ya hua)) chen shuang min jeong hyeok ;".
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (wang handling)) ((yi hua) OR (ya hua)) chen shuang min jeong hyeok ;*.