Perhaps you should try some spelling variations:
nhieu viec » nhien viet
hieu viec » hieu ve, sieu viet, hieu hien
hanh dai » hanh tai, hanh dao, vanh dai
hoc duoc » hoc nuoc, hoa duoc, hoc dung
su sach » so sach, vu sach
va hanh » van hanh, va thanh, va danh
duoc va » nuoc va, duc va, duoc ma
y nang » ky nang, ly nang, v nang
cua te » cua tu
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: su sach y nang ((x hoi) OR (o hoi)). ((hieu viec) or (nhieu viec)) hoc duoc va hanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ((x hoi) OR (o hoi)). ((hieu viec) OR (nhieu viec)) hoc duoc va hanh dai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang ((x hoi) OR (o hoi)). ((hieu viec) or (nhieu viec)) hoc duoc va hanh dai cua te".
• Adding a wildcard symbol may retrieve word variants: su sach y nang ((x hoi) OR (o hoi)). ((hieu viec) or (nhieu viec)) hoc duoc va hanh dai cua te*.