Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thuat san » thuat toan, thuat song, thuat lanh
vu khach » vu khanh, vu khac, vay khach
thanh do » thanh de, thanh pho, thanh hoa
nang xa » lang xa, nang ma, mang xa
hieu ve » hieu va, hieu van
cac duc » cac du, cao duc, cac dac
duc ban » duc tan, duc van, dua ban
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
do cua » doi cua, co cua, de cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu khach) or (thuat san)) ky ((nang xa) or (nang x)) hoi. hieu ve cac duc ban thanh do cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu khach) OR (thuat san)) ky ((nang xa) OR (nang x)) hoi. hieu ve cac duc ban thanh do cua tre.
• Adding a wildcard symbol may retrieve word variants: ((vu khach) or (thuat san)) ky ((nang xa) or (nang x)) hoi. hieu ve cac duc ban thanh do cua tre*.