I have just found a useful website that has variety of Nomen-Verb-Verbindungen (NVV).
Basically, NVV is another way to express verbs like 'Hilfe leisten'='helfen'(to help) and 'Frage stellen'= 'fragen'(to ask). My teacher says that sentences that are using NVV sounds more elegant.
If you would like to discover more about the German language then this might be the suitable site for you.
There are around 210 verbs there.
In fact, it is also available in Memrise: