Best is only 168 then change to some buses(svc15 eg.), depends
on where you alight.
Otherwise MRT to Khatib > 969 > Tamp int svc(svc69
eg.)
Based on your reply:
1. Take 168 from Woodlands Int to 'Blk 147' bus stop (Tampines
Ave 5)
2. Change to 23, and
take it to 'Temasek Poly' bus stop.