Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
doc sach » hoc sach, toc sach, dac sac
chat huu » pham huu
chat xuc » cam xuc, chao xu, chat cua
van anh » van thanh, tuan anh, van minh
hieu ve » hieu va, hieu van
hang xa » hoang xa, hang va, hang ca
ty hang » ly hang, ty xang, thi hang
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: ((doc sach) or (nuoc sach)) ty hang xa hoi. hieu ve ((chat xuc) OR (chat huu)) van anh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc sach) OR (nuoc sach)) ty hang xa hoi. hieu ve ((chat xuc) OR (chat huu)) van anh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc sach) or (nuoc sach)) ty hang xa hoi. hieu ve ((chat xuc) OR (chat huu)) van anh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((doc sach) or (nuoc sach)) ty hang xa hoi. hieu ve ((chat xuc) OR (chat huu)) van anh vi cua tre*.