Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
thuc day » thuc vat
vu sach » vu bach, su sach, vu khach
hanh de » hanh ve, hanh kem
thuc va » thuc vat
hieu le » hieu ve, hieu he, hieu ly
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
de cua » le cua, te cua, dieu 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 y nang ma hoi. hieu le na ((((thuc va) or (thuc dan))) or (thuc day)) hanh de cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang ma hoi. hieu le na ((((thuc va) OR (thuc dan))) OR (thuc day)) hanh de cua vat.
• Adding a wildcard symbol may retrieve word variants: vu sach y nang ma hoi. hieu le na ((((thuc va) or (thuc dan))) or (thuc day)) hanh de cua vat*.