Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
vu sach » vu bach, su sach, vu khach
sach ly » sach y, sach lo, sach ty
hanh di » hanh vi, hanh de, hang di
soc van » hoc van, oc van, sac van
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
sang ma » tang ma, sang tao, mang may
lang xa » lang ha, dang xay, lang van
nang ma » tang ma, nang cao, mang may
cua tre » cua te, cuu tre, cua triet
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ly ((lang xa) or (((nang ma) or (sang ma)))) hoi. hieu ve cham soc van hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ly ((lang xa) OR (((nang ma) OR (sang ma)))) hoi. hieu ve cham soc van hanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: vu sach ly ((lang xa) or (((nang ma) or (sang ma)))) hoi. hieu ve cham soc van hanh di cua tre*.