Perhaps you should try some spelling variations:
thanh thai » thanh hai, thanh tai, nhanh thai
ban thanh » ban hanh, ban hang
toc sach » hoc sach, doc sach, thuoc sach
thai cua » than cua, tai cuc, tri cua
nang mai » nang ma, nang tai, lang mai
dua ban » dia ban, cua ban, qua ban
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
mai hoi » mai khoi, dai hoi, lai hoi
ty nang » ky nang, ty xang, ty hang
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai

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 mai hoi. hieu ((ve cam) or (ve cac)) dua ban thanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang mai hoi. hieu ((ve cam) OR (ve cac)) dua ban thanh thai cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang mai hoi. hieu ((ve cam) or (ve cac)) dua ban thanh thai cua tre*.