Perhaps you should try some spelling variations:
planned how » planet how, planning how, planned what
long thanh » luong thanh, long han, long trinh
zhang jian » zhang fan, shang jin
hong than » hong tan, hong hai
jie zhang » jia zhang, li zhang, bin zhang
liang sun » liang dan, liang tan, wing sun
cong van » congo can, duong van, cong 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: ((hong than) OR (long thanh)) planned how jie zhang jian ((cong van) OR (liang sun)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hong than) OR (long thanh)) planned how jie zhang jian ((cong van) or (liang sun)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((hong than) OR (long thanh)) planned how jie zhang jian ((cong van) or (liang sun)) ;*.