Perhaps you should try some spelling variations:
day thanh » dao thanh, dat thanh, da thanh
toc sach » hoc sach, doc sach, thuoc sach
nha thuc » nhan thuc, nha thuoc, nham thuc
thuc day » thuc dan, thuc vat
thanh vi » hanh vi, thanh va, thanh ve
nang ma » tang ma, sang ma, mang may
hieu ve » hieu va, hieu van
luu tre » luu tru, cuu tre, luy tre
ve nha » ke nha
vi luu » vi lua

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach y ((nang ma) or (nang cao)) hoi. hieu ve nha thuc day thanh vi luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y ((nang ma) OR (nang cao)) hoi. hieu ve nha thuc day thanh vi luu tre.
• Adding a wildcard symbol may retrieve word variants: toc sach y ((nang ma) or (nang cao)) hoi. hieu ve nha thuc day thanh vi luu tre*.