Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
real lang » real long, real line, real plan
zhong tai » hong tan, hong hai, zhong zhi
yang yan » yang yang, wang yan, yang fan
oil real » oil coal, oil rent
wong yue » wang yue, hong yu
yan oil » can oil, oman oil, than oil
lang li » liang li, ling li, tang li

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

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