Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
hieu hien » bieu hien, dieu hien, chieu chien
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
cac bao » cach bao, cac bai, cac ban
bao van » dao van, cao van, hao van
vi cua » vai cua
di cua » dai cua, doi cua, de cua
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 ky nang x hoi. ((nhieu viec) or (hieu hien)) cac bao van hanh ((vi cua) OR (di cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. ((nhieu viec) OR (hieu hien)) cac bao van hanh ((vi cua) OR (di cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. ((nhieu viec) or (hieu hien)) cac bao van hanh ((vi cua) OR (di cua)) te".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. ((nhieu viec) or (hieu hien)) cac bao van hanh ((vi cua) OR (di cua)) te*.