"interests span" is a perfectly correct and usable phrase in written English.
You can use it when you want to refer to someone's variety of interests. For example, "My interests span from playing the guitar to reading poetry."
His interests span mobile telephony, supermarkets and oil refining.
As well as oil and gas, its interests span chemicals, retail and telecoms.
Mr. Naim -- whose interests span economics, and psychology as well as classic foreign policy -- soon revamped the magazine to make it look more like a literary publication.
Accomplished and sophisticated his interests span opera, classical music and kabuki theatre Mr Koizumi looks good on television and is popular with the voters, especially women.
The beneficiary of nearly $40 billion in American aid during Mr. Mubarak's rule, its interests span the gamut of economic life — from the military industry to businesses like road and housing construction, consumer goods and resort management.
Other interests span gaming, hotels, wine distribution, property.
Nancy was a very special person with varied interests spanning literature, travel, music, and the arts.
There's no disputing that Maier was peculiar and prickly, and that her interests spanned the benign and the morbid.
Fosun, which was founded by four university graduates in Shanghai in 1992, is one of China's largest conglomerates, with interests spanning banking, pharmaceuticals and mining.
Unlike many scholars, Dr. Greenberg was a synthesizer whose interests spanned the narrow fields of many specialists, not all of whom welcomed an outsider's interference in their domains.
The "farm fresh" apple, on the other hand, is produced by a large corporation with investments and interests spanning the globe.
