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 ngoc » hoc nuoc, ho ngoc, loc ngoc
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, va danh
ngoc va » nuoc va, ngoc ha, goc va
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
cua tu » cua tuc, cua su, cua cu

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 (v nang)) xa hoi. ((hieu viec) or (nhieu viec)) hoc ngoc va hanh dai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (v nang)) xa hoi. ((hieu viec) OR (nhieu viec)) hoc ngoc va hanh dai cua tu.
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (v nang)) xa hoi. ((hieu viec) or (nhieu viec)) hoc ngoc va hanh dai cua tu*.