Perhaps you should try some spelling variations:
dinh sinh » tinh sinh, dinh kinh, dinh tinh
hieu van » hieu va, thien van, lieu va
van dinh » van minh, van dich, va dinh
sinh cua » manh cua, dinh cuu, sinh va
tu sach » thu sach, su sach, te sach
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 (tu sach)) ky nang xa hoi. hieu van nam xua van dinh sinh cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cac) OR (tu 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 (tu sach)) ky nang xa hoi. hieu van nam xua van dinh sinh cua tre*.