Perhaps you should try some spelling variations:
research comments » research commons, research contents, research commentary
research studies » research study
phase research » case research, base research, use research
rand research » brand research, range research, card research
online phase » line phase, online page, nonlinear phase
online rand » online brand, online band, online hand

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( online phase research comments ) OR ( online rand research studies )).
• Adding a wildcard symbol may retrieve word variants: (( online phase research comments ) or ( online rand research studies ))*.