Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
sach ly » sach y, sach lo, sach ty
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
hanh de » hanh ve, hanh kem
cua tre » cua te, cuu tre, cua triet
soc va » hoc va, loc va, doc va
de cua » le cua, te cua, dieu 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 ((nang xa) or (nang ma)) hoi. hieu ve cham soc va hanh de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ly ((nang xa) OR (nang ma)) hoi. hieu ve cham soc va hanh de cua tre.
• Adding a wildcard symbol may retrieve word variants: vu sach ly ((nang xa) or (nang ma)) hoi. hieu ve cham soc va hanh de cua tre*.