Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
sach thi » sach thu, sach tai, sach thieu
thi nang » thi cong, ki nang, thi hanh
so sach » so sanh, bo sach, co sach
nang co » nang cao, nang doc, nang noi
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
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: so sach thi nang co loi. hieu va cac xuc ((le thanh) or (ban thanh)) lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach thi nang co loi. hieu va cac xuc ((le thanh) OR (ban thanh)) lai cua tre.
• Adding a wildcard symbol may retrieve word variants: so sach thi nang co loi. hieu va cac xuc ((le thanh) or (ban thanh)) lai cua tre*.