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

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