Perhaps you should try some spelling variations:
vowel changes » vowel change, model changes, level changes
raising vowel » raising power, raising powers, raising money
changes box » changes b, changes big, changes do
11 raising » 1 raising, 19 raising, 1.4 raising
wang yang » wang liang, wang yanling
li xiang » li qiang, li xiane, lian xiang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((((wang yang) OR (wang yan))) or (li xiang)) cio 11 raising vowel changes box ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((((wang yang) OR (wang yan))) OR (li xiang)) cio 11 raising vowel changes box ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((((wang yang) OR (wang yan))) or (li xiang)) cio 11 raising vowel changes box ;*".