Perhaps you should try some spelling variations:
health gains » health gaps, health goals, health gap
health gain » health goals
yan liang » yang liang, wang liang, you liang
shang kai » shang hai
yang jie » yang jin, yang di, yang jui
wan man » woran man, kann man, wenn man
man han » man hat, man can, man kann

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan man han ((health gains) OR (health gain)) ((yan liang) or (yang jie)) shang kai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan man han ((health gains) OR (health gain)) ((yan liang) OR (yang jie)) shang kai ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan man han ((health gains) OR (health gain)) ((yan liang) or (yang jie)) shang kai ;".
• Adding a wildcard symbol may retrieve word variants: wan man han ((health gains) OR (health gain)) ((yan liang) or (yang jie)) shang kai ;*.