Perhaps you should try some spelling variations:
challenges making » challenges facing, challenges during, challenges using
1 assessment » 3 assessment, 4 assessment, 1 assessing
making using » making use
wang yang » wang yan, wang liang, wang yanling
using hai » using ai, using heat, using haze
yang xi » yang di, yang yi, yang jui

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang yang) or (yang xi))wang hua 1 assessment challenges making using hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yang) OR (yang xi))wang hua 1 assessment challenges making using hai ;.
• Adding a wildcard symbol may retrieve word variants: ((wang yang) or (yang xi))wang hua 1 assessment challenges making using hai ;*.