Perhaps you should try some spelling variations:
real plan » ideal plan, el plan, rail plan
yan than » van thanh, yan zhang, yan clan
than oil » than coal, than only, than one
oil real » oil coal, oil rent
plan als » celan als, plan a, plan des
wong yue » wang yue, hong yu
wang » wing, wan, lang

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

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