Perhaps you should try some spelling variations:
learning gains » learning goals
sharing gains » sharing savings, securing gains, share gains
dong yang » dong hoang, wang yang, yang yang
hoang seo » hong seo, hoang sy
liang ii » liang li, liang wei, liang zhi
ii cost » ii cos, ii cross, di costo

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((dong yang) or (wang yan)) liang ii cost ((sharing gains) OR (learning gains)) hoang seo ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong yang) OR (wang yan)) liang ii cost ((sharing gains) OR (learning gains)) hoang seo ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong yang) or (wang yan)) liang ii cost ((sharing gains) OR (learning gains)) hoang seo ;*".