Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec cac » vien cac, viec cua, viec lam
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
cac tuc » cac toc, cac tu, cac tac
danh vi » hanh vi, dinh vi, danh va
danh di » danh du, xanh di, danh dien
luu tre » luu tru, cuu tre, luy tre
x hoi » xa hoi, o hoi, x ho

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. hieu viec cac tuc xa ((danh vi) OR (danh di)) luu tre~".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hieu viec cac tuc xa ((danh vi) OR (danh di)) luu tre*.