Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
van hanh » van thanh, ban hanh, van anh
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
soc van » hoc van, oc van, sac van
hanh va » hang va, hanh vi
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky tang xa hoi. hieu van cham soc van hanh va ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky tang xa hoi. hieu van cham soc van hanh va ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: te sac ky tang xa hoi. hieu van cham soc van hanh va ((cua tre) or (cuu tre))*.