My suggested Buangkok MRT bus services:
Service 108: Hougang Ctrl - Sengkang East Way (Loop) via Hougang
Ave 4/9, Hougang St 91/51, Sengkang Ctrl (Buangkok MRT), Anchorvale
Link, Anchorvale Rd
Service 152: Kovan Ter - Compassvale Cres (Loop) via Lor Ah Soo,
Serangoon Ctrl, YCK Rd, Buangkok Cres, Buangkok Dr, Sengkang Ctrl ,
Sengkang Town Centre
Feeder 375G/W: Compassvale Int - Anchorvale Link/Sengkang
Ctrl/Rivervale Dr
Feeder 376: Compassvale Int - Sengkang Ctrl (Loop) via Sengkang
East/West Way, Sengkang West Rd, Sengkang West Ave, Fernvale Link,
Buangkok Dr