Perhaps you should try some spelling variations:
nhanh thi » nhanh thai, nhanh thuc, nhan tai
nhanh tri » thanh tri, nhanh thai, chinh tri
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach kem
hieu ve » hieu va, hieu van
nang so » nang som, nang co, nang ho
sach ty » sach y, sach tu, sach thu
so hai » son hai, su hai, so ha
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 ky) or (sach ty)) nang so hai. hieu ve cac xuc van ((nhanh tri) OR (nhanh thi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach ty)) nang so hai. hieu ve cac xuc van ((nhanh tri) OR (nhanh thi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sach ty)) nang so hai. hieu ve cac xuc van ((nhanh tri) OR (nhanh thi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sach ty)) nang so hai. hieu ve cac xuc van ((nhanh tri) OR (nhanh thi)) cua tre*.