Perhaps you should try some spelling variations:
lang roman » late roman, law roman, lang rom
real liang » real long, real line
wang oman » wang yan, wang ban, wang dan
oil real » oil coal, oil rent
liang li » ling li, qiang li, liang wei
hong hai » shang hai, zhong tai, dang hai
hong yu » wong yue

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 oman) OR (lang roman)) oil real liang li ((hong hai) or (hong yu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((wang oman) OR (lang roman)) oil real liang li ((hong hai) OR (hong yu)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((wang oman) OR (lang roman)) oil real liang li ((hong hai) or (hong yu)) ;".
• Adding a wildcard symbol may retrieve word variants: wang ((wang oman) OR (lang roman)) oil real liang li ((hong hai) or (hong yu)) ;*.