Perhaps you should try some spelling variations:
nhanh tri » nhanh thi, thanh tri, nhanh thai
van nhanh » van thanh, van hanh, van khanh
thu sach » thuat sach, thuoc sach, thu hoach
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
hieu va » lieu va, hieu qua
hieu ve » hieu van
nang ro » nang co, nang ho, nang ra
tu sach » su sach, te sach, tu cach
cua tre » cua te, cuu tre, cua triet
ro hai » co hai, o hai, so hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) OR (tu sach)) ky nang ro hai. ((hieu ve) or (hieu va)) cac xuc van nhanh tri cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) ky nang ro hai. ((hieu ve) OR (hieu va)) cac xuc van nhanh tri cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (tu sach)) ky nang ro hai. ((hieu ve) or (hieu va)) cac xuc van nhanh tri cua tre".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (tu sach)) ky nang ro hai. ((hieu ve) or (hieu va)) cac xuc van nhanh tri cua tre*.