Perhaps you should try some spelling variations:
sudan debt » sudan der, sudan west
wang yang » wang yan, wang liang, wang yanling
yang jui » yang judy, yang xi
low than » lower than, know than, low tax
yang yi » yang xi
3 sudan » _ sudan, im sudan, _ sudano
e among » eu among, 1 among, use among
debt e » debt _, debt a, debt 1
gg 3 » gg b, ag 3, gg 2

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: ((((((yang yi) OR (yang jui))) OR (wang yang))) OR (yang di))gg 3 sudan debt e among low than ;~.
• Adding a wildcard symbol may retrieve word variants: ((((((yang yi) or (yang jui))) or (wang yang))) or (yang di))gg 3 sudan debt e among low than ;*.