Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, gian cac
dinh vai » dinh van, dinh vi, dinh va
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
vien da » vien dai, hien dai
va dinh » van dinh, va kinh, va tinh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
lo va » lo van, lao va, ly va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang xa hoi. hieu ((vien cac) OR (vien da)) lo va dinh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu ((vien cac) OR (vien da)) lo va dinh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu ((vien cac) OR (vien da)) lo va dinh vai cua tre*.