Perhaps you should try some spelling variations:
wang xueman » wang xuan
umfang 18 » umfang a, umfang ii
umfang b » umfang a, umfang big, umfang ii
umfang 3 » umfang a, umfang ii
when han » when can, when have, when a
bai cong » bai chong, yan cong, li cong
han bai » than bad, than bau

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang xueman ((umfang 18) or (((umfang b) OR (umfang 3)))) when han bai cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang xueman ((umfang 18) OR (((umfang b) OR (umfang 3)))) when han bai cong shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang xueman ((umfang 18) or (((umfang b) OR (umfang 3)))) when han bai cong shu ;*".