Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh lai » hanh lam, hanh tai, thanh lap
van hanh » van thanh, ban hanh, van anh
thu sach » thuat sach, thuoc sach, thu hoach
nang van » dang van, tang van, lang van
tu sach » te sach, tu cach, vu sach
lai cua » dai cua, hai cua, lai chau
xuc van » duc van, luc van, xuc ban
van cam » van nam, van lam, van cau
van hoc » van hoa
su sach » so sach, vu sach
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 sach) OR (su sach))) or (thu sach)) ky nang van hoc. hieu van cam xuc van hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu sach) OR (su sach))) OR (thu sach)) ky nang van hoc. hieu van cam xuc van hanh lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((tu sach) OR (su sach))) or (thu sach)) ky nang van hoc. hieu van cam xuc van hanh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((((tu sach) OR (su sach))) or (thu sach)) ky nang van hoc. hieu van cam xuc van hanh lai cua tre*.