Perhaps you should try some spelling variations:
sudan debt » sudan der, sudan west
yang yang » wang yang, wang yan
hong hong » hong kong, hong jong, hong ng
yang yi » yang xi, yang jui
3 sudan » _ sudan, im sudan, _ sudano
debt ma » debt a, debt main, debt bad
ma hong » a hong, kia hong, tan hong
tan » than

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((yang yi) or (yang yang))) or (yang di))d 3 sudan debt ma hong hong tan ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((yang yi) OR (yang yang))) OR (yang di))d 3 sudan debt ma hong hong tan ;*.