Perhaps you should try some spelling variations:
yanling yang » yang yang, ying yang
zhong tai » hong tan, hong hai, zhong zhi
oil real » oil rent
oil coal » oil cost, oil oil, oil can
qiang li » liang li, qiang niu, ling li
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 yanling yang ((oil real) OR (oil coal)) qiang li ((zhong tai) or (wong yue)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yanling yang ((oil real) OR (oil coal)) qiang li ((zhong tai) OR (wong yue)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yanling yang ((oil real) OR (oil coal)) qiang li ((zhong tai) or (wong yue)) ;".
• Adding a wildcard symbol may retrieve word variants: wang yanling yang ((oil real) OR (oil coal)) qiang li ((zhong tai) or (wong yue)) ;*.