Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
dang xay » dang van, van xay
qua nham » qua nhat, qua cham, sua nham
thuc dan » thuc hanh, hoc dan, thuc vat
dan vanh » dan canh, dan hanh, dang hanh
vanh dai » van dai, vanh tai, lanh dao
xay hoi » xa hoi, tay hoi, cay phoi
cua tre » cua te, cuu tre, cua triet
sai ky » sac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach y) or (((cac ky) or (sai ky)))) dang xay hoi. hieu qua nham thuc dan vanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach y) OR (((cac ky) OR (sai ky)))) dang xay hoi. hieu qua nham thuc dan vanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach y) or (((cac ky) or (sai ky)))) dang xay hoi. hieu qua nham thuc dan vanh dai cua tre*.