Perhaps you should try some spelling variations:
challenges making » challenges facing, challenges during, challenges using
challenges min » challenges m, challenges moving, challenges ramina
hyoung hai » hong hai
3 current » 3 concurrent
wang yang » wang yan, wang liang, wang yanling
wong yue » wang yue, hong yu
yang xi » yang di, yang yi, yang jui
yue 3 » vue 3, yue _

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))wong yue 3 current ((challenges min) OR (challenges making)) hyoung hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yang) OR (yang xi))wong yue 3 current ((challenges min) OR (challenges making)) hyoung hai ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yang) or (yang xi))wong yue 3 current ((challenges min) OR (challenges making)) hyoung hai ;".
• Adding a wildcard symbol may retrieve word variants: ((wang yang) or (yang xi))wong yue 3 current ((challenges min) OR (challenges making)) hyoung hai ;*.