Perhaps you should try some spelling variations:
real linear » real line, local linear, total linear
linear plot » line plot, linear flow, linear logit
wang liang » wang yang
liang iran » liang dan, liang tan
iran money » iraq money, grant money, iran lonely
money real » money really, money great, money el
zhang zhi » zhong zhi, wang zhi, zhang wei
hong yu » wong yue

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wang liang iran money real linear plot ((((zhang zhi) OR (zhen wei))) OR (hong yu)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang liang iran money real linear plot ((((zhang zhi) or (zhen wei))) or (hong yu)) ;*.