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, mang xa, ang xa
hieu ve » hieu van
hieu va » lieu va, hieu qua
sac van » cac van, san van, sat van
hanh di » hanh vi, hanh de, hang di
cuu tre » cua tre, cau tren, cau treo
di cuu » di cau, di cua, dinh cuu

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 hoi. ((hieu ve) or (hieu va)) cham sac van hanh di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty xang xa hoi. ((hieu ve) OR (hieu va)) cham sac van hanh di cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sach ty xang xa hoi. ((hieu ve) or (hieu va)) cham sac van hanh di cuu tre*.