Perhaps you should try some spelling variations:
nhieu viec » nhien viet
hieu viec » hieu ve, sieu viet, hieu hien
hoc ngoc » hoc nuoc, ho ngoc, loc ngoc
hanh dai » hanh tai, hanh dao, vanh dai
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, va danh
ly nang » ky nang, ly hang, ly vang
ngoc va » nuoc va, ngoc ha, goc va
y nang » ky nang, v nang, may nang
cua te » cua tu

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