Perhaps you should try some spelling variations:
wang shawn » tan shawn
wang wang » wang yang, wang liang, wang yan
shawn oil » shale oil, shawn sim, than oil
oil coal » oil cost, oil oil, oil can
plan als » celan als, plan a, plan act
plan des » plan de, bilan des, plan du
wong yue » wang yue, hong yu

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

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