Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
thu sach » tu sach, thuat sach, thuoc sach
hanh lai » hanh lam, hanh tai, thanh lap
nang van » dang van, tang van, lang van
xuc van » duc van, luc van, thuc van
lai cua » dai cua, hai cua, lai chau
xuc ban » duc ban, cuc ban, quoc ban
tu cach » tu cac
van cam » van nam, van lam, van cau
van hoc » van hoa
cua tre » cua te, cuu tre, cua triet

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

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