From Guangzhou metro station keyun Lu to the Tianhe high tech industrial ericsson company.

The easiest way is to take a taxi for CNY 10. :)

Ok . thanks. But there is no bus that can take me there?

Of course there are, but you need to walk. From the subway station, walk about 200 yards to Yuancun East and take bus 40, 44, 518, 562, 517... to Yuancun Siheng Road Corss (it's only one stop ride), then walk about 700 yards to get there.
Actually, you can cover this distance all by foot. It's about 1500 yards and takes 15-20 minutes.

Iam Philippines national,Iam planing to have vacation in Guangzhou they give me only 30 days to stay can I renew my visa to stay longer in GZ?

You can extend your visa at the local exit and entry administration before it expires.