Perhaps you should try some spelling variations:
tuning system » funding system, using system, training system
liang yang » liang ying, wang yang, yang yang
zhang xin » zhang jian, zhang ming, zhang fan
xin liang » yan liang
li tuning » iii tuning, pid tuning, _ tuning
yang xi » yang yi, yang jui
yang li » yang lin, yang yi, tang li
wang » wing, wan

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 OR lang) yan) OR (((yang xi) OR (yang di)))) zhang xin liang yang li tuning system ;~.
• Adding a wildcard symbol may retrieve word variants: (((wang or lang) yan) or (((yang xi) or (yang di)))) zhang xin liang yang li tuning system ;*.