Perhaps you should try some spelling variations:
virtual threads » virtual teams
virtual three » virtual thermo, virtual try, virtual time
world comes » world code, world comments, world complex
comes image » codes image, cases image, cues image
iet world » iot world, net world, ict world
2008 iet » 2008 ieee

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: 2008 iet world comes image ((virtual threads) OR (virtual three)).
• Adding a wildcard symbol may retrieve word variants: 2008 iet world comes image ((virtual threads) or (virtual three))*.