Perhaps you should try some spelling variations:
hinh thai » sinh thai, tinh thai, dinh thi
hanh thai » nhanh thai, hanh tai, anh thai
tu sach » thu sach, te sach, tu cach
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
su sach » so sach, vu sach
nang o » nang co, nang ho, nang ro
ve cam » ve cham, ve cac, va cam
o hai » co hai, so hai, o lai

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) OR (su sach)) ky nang o hai. hieu ve cam xuc van ((hanh thai) or (hinh thai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang o hai. hieu ve cam xuc van ((hanh thai) OR (hinh thai)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ky nang o hai. hieu ve cam xuc van ((hanh thai) or (hinh thai)) cua tre*".