Perhaps you should try some spelling variations:
challenges making » challenges facing, challenges during, challenges using
4 assessment » 3 assessment
wang yang » wang yan, wang liang, wang yanling
yang jun » yang jui, pang jun, yang jin
data hai » data hub, data how, data hob
ng ye » ng yew, ong ye
ye 4 » e 4, ye a, ye j

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yang) OR (((yang di) OR (yang jun))))ng ye 4 assessment challenges making data hai ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang yang) or (((yang di) or (yang jun))))ng ye 4 assessment challenges making data hai ;*.