Complex sentence: After two seasons with Linz, he went on to coach Croatian club NK Zagreb and spent two seasons there before moving to Dinamo Zagreb in July 1976, spending almost four seasons at the club before returning to Austria in March 1980 to coach Sturm Graz.
Split into simpler sentences: After two seasons with Linz, he went on to coach Croatian club NK Zagreb and spent two seasons there before moving to Dinamo Zagreb in July 1976. At the same time, he spent almost four seasons at Dinamo Zagreb before returning to Austria in March 1980 to coach Sturm Graz.