Perhaps you should try some spelling variations:
nhanh thai » nhanh thi, nhanh thanh, nhanh thang
hanh thai » hinh thai, hanh tai, anh thai
tu sach » thu sach, su sach, te sach
cac xuc » cam xuc, cac nuoc, chat xuc
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
nang co » nang cao, nang doc, nang noi
nang o » nang ho, nang ro, nang x
ve cac » va cac, vien cac

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 ty ((nang o) or (nang co)) hai. hieu ve cac xuc ban ((hanh thai) or (nhanh thai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((nang o) OR (nang co)) hai. hieu ve cac xuc ban ((hanh thai) OR (nhanh thai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((nang o) or (nang co)) hai. hieu ve cac xuc ban ((hanh thai) or (nhanh thai)) cua tre*.