Perhaps you should try some spelling variations:
wang handling » wang yanling, cargo handling, waste handling
jeong dahyeon » jeong hyeok
chen chang » chen chung, chin chang, shen chang
yang yang » wang yang, wang yan
yulu chen » yu chen
chang mae » chang ha, changes made
mae jeong » lee jeong, min jeong

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 yulu chen chang mae jeong dahyeon ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (wang handling)) yi yulu chen chang mae jeong dahyeon ;*.