Perhaps you should try some spelling variations:
vu sach » su sach, vu khach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
hanh de » hanh ve, hanh kem
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc 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) or (vu bach)) y nang xa hoi. hieu va cam ((xuc va) or (thuc vat)) hanh de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu bach)) y nang xa hoi. hieu va cam ((xuc va) OR (thuc vat)) hanh de cua tre.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (vu bach)) y nang xa hoi. hieu va cam ((xuc va) or (thuc vat)) hanh de cua tre*.