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