Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
van hanh » van thanh, ban hanh, van anh
van bac » van bao, van hac, dan bac
lai cua » dai cua, hai cua, lai chau
xuc van » duc van, luc van, vuc van
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty hang » ly hang, ty xang, thi hang
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, ma hoa, me hoi

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 ty hang ((ma hoi) or (xa hoi)). thien ((van bac) OR (van ban)) xuc van hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty hang ((ma hoi) OR (xa hoi)). thien ((van bac) OR (van ban)) xuc van hanh lai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty hang ((ma hoi) or (xa hoi)). thien ((van bac) OR (van ban)) xuc van hanh lai cua tre*".