Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
vien cac » vien bach, vien dai, vien da
va thanh » gia thanh, ban thanh, va tinh
viec cac » viec cua, viec lam, viec va
vai cua » dai cua, hai cua, lai cua
vu san » va san, vu ban
tuc va » thuc va, truc va, tuc xa
cua te » cua tu
san ky » sang ky, van ky, dan ky
o hoi » co hoi, o hoc, o hai
x hoi » xa hoi, x ho, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu san ky nang ((x hoi) or (o hoi)). hieu ((viec cac) OR (vien cac)) tuc va thanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu san ky nang ((x hoi) OR (o hoi)). hieu ((viec cac) OR (vien cac)) tuc va thanh vai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu san ky nang ((x hoi) or (o hoi)). hieu ((viec cac) OR (vien cac)) tuc va thanh vai cua te*".