Perhaps you should try some spelling variations:
sudan debt » sudan der, sudan west
amin thong » min hong
amin hong » min hong, among hong, tin hong
yang yao » yang yang, wang yan, yang fan
yang yi » yang xi, yang jui
3 sudan » _ sudan, im sudan, _ sudano
debt a » debt _
ag 3 » a 3, ai 3, ad 3

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 yao))) OR (yang di))ag 3 sudan debt a ((amin thong) OR (amin hong)) guan ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((yang yi) or (yang yao))) or (yang di))ag 3 sudan debt a ((amin thong) OR (amin hong)) guan ;~".
• Adding a wildcard symbol may retrieve word variants: ((((yang yi) or (yang yao))) or (yang di))ag 3 sudan debt a ((amin thong) OR (amin hong)) guan ;*.