Perhaps you should try some spelling variations:
present challenges » current challenges, assessment challenges
challenges ji » challenges 1, challenges 3, challenges 5
3 present » _ present
shang hai » shang kai, dang hai, chang ha
ji shang » wei shang, xia shang, _ shang
yang xi » yang di, yang jui
yang yi » yang di, yang jui
png a » png _, lng a, peg a
wang » wing, 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 OR wan) yan) or (((yang xi) or (yang yi))))png a 3 present challenges ji shang hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((wang OR wan) yan) OR (((yang xi) OR (yang yi))))png a 3 present challenges ji shang hai ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((wang OR wan) yan) or (((yang xi) or (yang yi))))png a 3 present challenges ji shang hai ;".
• Adding a wildcard symbol may retrieve word variants: (((wang OR wan) yan) or (((yang xi) or (yang yi))))png a 3 present challenges ji shang hai ;*.