Perhaps you should try some spelling variations:
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va dinh » van dinh, va kinh, va tinh
dinh vi » dinh ve, dinh viet, dinh tri
cua tre » cua te, cuu tre, cua triet
te sac » te sach
te san » te ban, ke san, tu san
te cac » tu cac, ve cac, te cao
vi cua » vai cua, di cua
va am » va lam, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((te sac) or (te san))) or (te cac)) ky nang x ho. hieu va am thuc va dinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((te sac) OR (te san))) OR (te cac)) ky nang x ho. hieu va am thuc va dinh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((((te sac) or (te san))) or (te cac)) ky nang x ho. hieu va am thuc va dinh vi cua tre*.