Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
sach ky » sac ky, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
xuc ban » duc ban, cuc ban, quoc ban
ban anh » ban hanh, ban banh, ban danh
cua tre » cua te, cuu tre, cua triet
anh vi » hanh vi, anh va, anh ve
vi cua » vai cua, di cua

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

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