Perhaps you should try some spelling variations:
day thanh » dao thanh, dat thanh, da thanh
thanh lam » thanh lap, hanh lam, thanh nam
toc sach » hoc sach, doc sach, thuoc sach
van tuan » van quan, van ban, anh tuan
thuc day » thuc dan, thuc vat
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
cao hoi » cau hoi, co hoi, cao hoc
van tai » von tai
lam cua » nam cua, lam chat
cua tre » cua te, cuu tre, cua triet

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 ty nang cao hoi. hieu ((van tai) or (van tuan)) thuc day thanh lam cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang cao hoi. hieu ((van tai) OR (van tuan)) thuc day thanh lam cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang cao hoi. hieu ((van tai) or (van tuan)) thuc day thanh lam cua tre*.