Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
thu nang » thi nang, thu hang, thu bang
sach thu » sach thue, sach thieu, sach tham
vu sach » vu bach, su sach, vu khach
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va
nang co » nang cao, nang doc, nang noi
co loi » co hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach thu nang co loi. ((hieu va) or (hieu qua)) cam xuc ((va thanh) or (ban thanh)) lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach thu nang co loi. ((hieu va) OR (hieu qua)) cam xuc ((va thanh) OR (ban thanh)) lai cua tre.
• Adding a wildcard symbol may retrieve word variants: vu sach thu nang co loi. ((hieu va) or (hieu qua)) cam xuc ((va thanh) or (ban thanh)) lai cua tre*.