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

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