Perhaps you should try some spelling variations:
wang handling » wang yanling, cargo handling, waste handling
keong hyeok » jeong hyeok
yang yang » wang yang, wang yan
chang kin » chang min, chang ann, chang yun
chang won » chang soon, chang ann, chang min
hua chen » jui chen, yu chen, a chen
yi hua » li hua, ya hua, yi hui

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 chen ((chang kin) OR (chang won)) keong hyeok ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (wang handling)) yi hua chen ((chang kin) OR (chang won)) keong hyeok ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang yang) or (wang handling)) yi hua chen ((chang kin) OR (chang won)) keong hyeok ;*".