Perhaps you should try some spelling variations:
dinh sinh » tinh sinh, dinh kinh, dinh tinh
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
van dinh » van minh, van dich, va dinh
sinh cua » manh cua, dinh cuu, sinh va
nang xa » nang x, lang xa, nang ma
nam xua » nam cua, nam mua, nam qua
xua van » xua va, qua van, cua van
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cac) or (thu sach)) ky nang xa hoi. hieu van nam xua van dinh sinh cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cac) OR (thu sach)) ky nang xa hoi. hieu van nam xua van dinh sinh cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (thu sach)) ky nang xa hoi. hieu van nam xua van dinh sinh cua tre*.