Perhaps you should try some spelling variations:
yang liang » yan liang, yang yang, yang guang
peng liang » deng ziliang
wang liang » wang yang
heat gain » health gain, health gains, wheat grains
sun heat » sun yat
yang yi » yang xi, yang jui
hong g » hong ng, hong w, hong 7

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: ((((yang liang) OR (peng liang))) OR (wang liang)) sun heat gain ((yang yi) OR (yang di)) hong g ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((yang liang) OR (peng liang))) or (wang liang)) sun heat gain ((yang yi) or (yang di)) hong g ;~".
• Adding a wildcard symbol may retrieve word variants: ((((yang liang) OR (peng liang))) or (wang liang)) sun heat gain ((yang yi) or (yang di)) hong g ;*.