Perhaps you should try some spelling variations:
zhong tai » hong tan, zhong zhi
yan than » van thanh, yan zhang, yan clan
oil rent » oil rents, oil trend
oil real » oil coal
liang li » ling li, qiang li, liang wei
hong hai » shang hai, dang hai, hong tan
hong yu » wong yue
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 rent) OR (oil real)) liang li ((((zhong tai) or (hong hai))) or (hong yu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan than ((oil rent) OR (oil real)) liang li ((((zhong tai) OR (hong hai))) OR (hong yu)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan than ((oil rent) OR (oil real)) liang li ((((zhong tai) or (hong hai))) or (hong yu)) ;*".