Perhaps you should try some spelling variations:
change threat » change great
than change » chain change, can change, mean change
threat don » threat how
yang yang » wang yang
qian yan » qian jun, qian yi
hua than » hua ban, hua chen, hua zhao
don hui » tong hui, dong hua, gong hui

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

• Performing a fuzzy search may retrieve terms with similar spellings: (wang or lang) ((((qian yan) or (wang yan))) or (yang yang)) hua than change threat don hui ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (wang OR lang) ((((qian yan) OR (wang yan))) OR (yang yang)) hua than change threat don hui ;.
• Adding a wildcard symbol may retrieve word variants: (wang or lang) ((((qian yan) or (wang yan))) or (yang yang)) hua than change threat don hui ;*.