Hi, just finished implementing this stuff. To search a AND b use 'q=A+B'. Here are a few examples:

> curl -XGET -G 'api.datanews.io/v1/news' -d 'apiKey=API_KEY' --data-urlencode 'q="Europe throws new rule book at Google, tech giants to loosen market grip"'

> curl -XGET -G 'api.datanews.io/v1/news' -d 'apiKey=API_KEY' --data-urlencode 'q=google+facebook+amazon'

Supported operators:

+ AND, | OR, - NOT, () parentheses for grouping, "" exact match

EDIT: examples