Perhaps you should try some spelling variations:
thanh planned » than planned
planned how » planet how, planning how, planned what
long thanh » luong thanh, long han, long trinh
zhang jian » zhang fan
liang sun » liang dan, liang tan, wing sun
cong sun » cong shu, cong van, wing sun

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: long thanh planned how we ((zhang jian) OR (shang jin)) ((cong sun) OR (liang sun)) ;~.
• Adding a wildcard symbol may retrieve word variants: long thanh planned how we ((zhang jian) or (shang jin)) ((cong sun) or (liang sun)) ;*.