Perhaps you should try some spelling variations:
thuc day » thuc dan, thuc vat
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
hieu le » hieu ve, hieu he, hieu ly
thuc va » thuc vat, thuc dan
hanh di » hanh vi, hanh de, hang di
di cua » dai cua, doi cua, de cua
le na » le nam, le va, le ta

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 ky nang ma hoa. hieu le na ((thuc va) or (thuc day)) hanh di cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang ma hoa. hieu le na ((thuc va) OR (thuc day)) hanh di cua vat.
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang ma hoa. hieu le na ((thuc va) or (thuc day)) hanh di cua vat*.