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 hai » shang kai, dang hai, chang ha
yang jin » yang jie, yang jun, ying jin
kann » ann
man » main, many, mean

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

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