Perhaps you should try some spelling variations:
wang yong » wang yang, wang hyoung, wang yan
real plan » ideal plan, el plan, rail plan
yong yan » yang yang, dong yang, ying yang
oil real » oil coal, oil rent
wong yue » wang yue, hong yu
yan oil » can oil, oman oil, than oil
plan li » plan la, plan les, plan als

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yong yan oil real plan li ((dang hai) or (wong yue)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yong yan oil real plan li ((dang hai) OR (wong yue)) ;.
• Adding a wildcard symbol may retrieve word variants: wang yong yan oil real plan li ((dang hai) or (wong yue)) ;*.