Perhaps you should try some spelling variations:
hinh thai » sinh thai, tinh thai, dinh thi
thai cua » than cua, tai cuc, tri cua
van hinh » van chinh, van thinh, van minh
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, cua triet
cam duc » cam xuc, cao duc, pham duc
dang xa » dang xay, dang ha, dang va
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va
duc van » duc va, duc tan, duc manh
su sai » su tai, su hai, su dai
sai ky » sac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sai ky ((dang xa) or (lang xa)) hoi. ((hieu ve) OR (hieu van)) cam duc van hinh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky ((dang xa) OR (lang xa)) hoi. ((hieu ve) OR (hieu van)) cam duc van hinh thai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ky ((dang xa) or (lang xa)) hoi. ((hieu ve) OR (hieu van)) cam duc van hinh thai cua tre*".