Perhaps you should try some spelling variations:
hien cac » thien cac, hieu cac, dien cac
vien cac » vien bach, vien dai, vien da
hanh vai » hanh vi, hanh va, hanh tai
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
cua te » cua tu
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: su sach ky lang xa hoi. hieu ((hien cac) or (vien cac)) lo va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky lang xa hoi. hieu ((hien cac) OR (vien cac)) lo va hanh vai cua te.
• Adding a wildcard symbol may retrieve word variants: su sach ky lang xa hoi. hieu ((hien cac) or (vien cac)) lo va hanh vai cua te*.