Perhaps you should try some spelling variations:
handling changes » handling charge, managing changes, analyzing changes
handling charges » handling charge, parking charges
yang juan » yang jun, huang juan, jiang juan
juan meng » juan rene, jui meng, yuan ming
you gain » you can
run gain » run pain
meng hai » dang hai, feng hui, hong hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang ((handling changes) OR (handling charges)) ((you gain) or (run gain)) yang juan meng hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang ((handling changes) OR (handling charges)) ((you gain) OR (run gain)) yang juan meng hai ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang ((handling changes) OR (handling charges)) ((you gain) or (run gain)) yang juan meng hai ;*".