Perhaps you should try some spelling variations:
hinh thai » sinh thai, tinh thai, chinh tai
dinh thi » dinh tri
hanh tai » thanh tai, hang tai, han tai
sach ky » sac ky, sach y, sach ty
tu sach » thu sach, su sach, te sach
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
nang ho » nang hoc, nang co, tang ho
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
ho hai » hoc hai, pho hai, cho hai

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 nang ho hai. hieu ve cac xuc van ((hanh tai) or (((hinh thai) OR (dinh thi)))) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ho hai. hieu ve cac xuc van ((hanh tai) OR (((hinh thai) OR (dinh thi)))) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang ho hai. hieu ve cac xuc van ((hanh tai) or (((hinh thai) OR (dinh thi)))) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ho hai. hieu ve cac xuc van ((hanh tai) or (((hinh thai) OR (dinh thi)))) cua tre*.