Perhaps you should try some spelling variations:
present challenges » current challenges, assessment challenges
challenges ji » challenges 1, challenges 3, challenges 5
2 present » _ present, 3 present
wing yan » wang yan, wing ian, wing tan
hong hai » shang hai, zhong tai, dang hai
yang xi » yang yi, yang jui
ji hong » ji zhong, kia hong, thi hong
lng a » lng _, leg a, lpg a

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wing yan) or (((yang di) or (yang xi))))lng a 2 present challenges ji hong hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wing yan) OR (((yang di) OR (yang xi))))lng a 2 present challenges ji hong hai ;.
• Adding a wildcard symbol may retrieve word variants: ((wing yan) or (((yang di) or (yang xi))))lng a 2 present challenges ji hong hai ;*.