Perhaps you should try some spelling variations:
cham sac » cham soc, pham sach, cap sac
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, ang xa, dang xay
mang xa » lang xa, mang may, dang xay
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
sac van » cac van, san van, sat van
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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 ty ((xang xa) OR (mang xa)) hoi. hieu vu cham sac van hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((xang xa) OR (mang xa)) hoi. hieu vu cham sac van hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((xang xa) OR (mang xa)) hoi. hieu vu cham sac van hanh vi cua tre*.