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
tu sach » thu sach, su sach, te sach
duoc va » nuoc va, duoc ma, duong va
y nang » ky nang, ly nang, v nang
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang x hoi. ((hieu viec) or (nhieu viec)) hoc ((duoc va) OR (duc va)) hanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. ((hieu viec) OR (nhieu viec)) hoc ((duoc va) OR (duc va)) hanh dai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang x hoi. ((hieu viec) or (nhieu viec)) hoc ((duoc va) OR (duc va)) hanh dai cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. ((hieu viec) or (nhieu viec)) hoc ((duoc va) OR (duc va)) hanh dai cua te*.