Perhaps you should try some spelling variations:
present challenges » current challenges, assessment challenges
challenges m » challenges 1, challenges 3, challenges 5
2 present » _ present, 3 present
shang hai » shang kai, dang hai, chang ha
yang xi » yang yi, yang jui
m shang » _ shang
ng y » ng _, g y, na y
wang » wing, wan, lang

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

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