Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
vien cac » vien bach, vien dai, vien da
phuc van » thuc van, phuc va, chuc van
van hanh » van thanh, ban hanh, van anh
sach ky » sac ky, sach y, sach ty
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, cua triet
ve cac » va cac
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: nuoc sach ky nang x hoi. hieu ((ve cac) OR (vien cac)) phuc van hanh di cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nuoc sach ky nang x hoi. hieu ((ve cac) OR (vien cac)) phuc van hanh di cua tre".
• Adding a wildcard symbol may retrieve word variants: nuoc sach ky nang x hoi. hieu ((ve cac) OR (vien cac)) phuc van hanh di cua tre*.