Perhaps you should try some spelling variations:
power changes » cover changes, poor changes, power challenges
vowel changes » vowel change, model changes, level changes
liang lilin » liang liying, jiang liping
lian xiang » li xiang
a raising » _ raising, a rising, 1 raising
cio a » cio _, ceo a, cfo a

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((liang lilin) or (lian xiang)) cio a raising ((power changes) OR (vowel changes)) 5 ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((liang lilin) OR (lian xiang)) cio a raising ((power changes) OR (vowel changes)) 5 ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((liang lilin) or (lian xiang)) cio a raising ((power changes) OR (vowel changes)) 5 ;*".