Perhaps you should try some spelling variations:
liang wei » xiang wei, zhang wei, wang wei
wang yang » wang yan, wang liang, wang yanling
wang ban » wang yan, wang dan, bang bang
ban bann » tan bann, bang bang, bank bank
bann oil » can oil
oil chad » oil can, oil coal
hong hai » shang hai, zhong tai, dang hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ban bann oil chad liang wei ((hong hai) or (wang yang)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ban bann oil chad liang wei ((hong hai) OR (wang yang)) ;.
• Adding a wildcard symbol may retrieve word variants: wang ban bann oil chad liang wei ((hong hai) or (wang yang)) ;*.