Perhaps you should try some spelling variations:
wang hong » wang hyoung, wang lihong, wang heyong
wang yong » wang yang, wang hyoung, wang yan
shang hai » shang kai, dang hai, chang ha
der rent » der re, der rede
oil rent » oil rents, oil trend, oil real
lang li » liang li, ling li, tang li
hong yu » wong yue

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang hong) OR (wang yong)) hoang ((der rent) or (oil rent)) lang li ((shang hai) or (hong yu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang hong) OR (wang yong)) hoang ((der rent) OR (oil rent)) lang li ((shang hai) OR (hong yu)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang hong) OR (wang yong)) hoang ((der rent) or (oil rent)) lang li ((shang hai) or (hong yu)) ;".
• Adding a wildcard symbol may retrieve word variants: ((wang hong) OR (wang yong)) hoang ((der rent) or (oil rent)) lang li ((shang hai) or (hong yu)) ;*.