Perhaps you should try some spelling variations:
yang liang » wang liang, yan liang, peng liang
yang wang » yang guang, wang yang, yang fan
yang yang » wang yang, wang yan
liang tan » liang dan, liang sun, wing tan
yan wang » yuan wang, qian wang, yan liang
nan yan » nan ya, wang yan, qian yan
test » text, west, best

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: nan yan wang zhi (rest OR test) ((yang wang) OR (((yang liang) OR (yang yang)))) liang tan ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nan yan wang zhi (rest or test) ((yang wang) or (((yang liang) OR (yang yang)))) liang tan ;~".
• Adding a wildcard symbol may retrieve word variants: nan yan wang zhi (rest or test) ((yang wang) or (((yang liang) OR (yang yang)))) liang tan ;*.