Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tran anh » tran manh, tuan anh, tran thanh
thu sach » tu sach, thuat sach, thuoc sach
hieu va » lieu va, hieu qua
dau xuc » dau xac, dau xua, dau nuoc
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, dua tren
van anh » van thanh, tuan anh, van minh
va dau » va dao
y nang » ky nang, ly nang, v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y nang xa hoi. hieu va dau xuc ((van anh) or (tran anh)) vai ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang xa hoi. hieu va dau xuc ((van anh) OR (tran anh)) vai ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang xa hoi. hieu va dau xuc ((van anh) or (tran anh)) vai ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang xa hoi. hieu va dau xuc ((van anh) or (tran anh)) vai ((cua tre) OR (cua triet))*.