Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
van hanh » van thanh, ban hanh, van anh
sach thu » sach thue, sach thieu, sach tham
lai cua » dai cua, hai cua, lai chau
xuc van » duc van, luc van, vuc van
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
sach ky » sac ky, sach y, sach kem
sach ty » sach y, sach tu, xach tay
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam

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 ky) or (((sach ty) OR (sach thu)))) lang xa hoi. hieu ve cam xuc van hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach ky) OR (((sach ty) OR (sach thu)))) lang xa hoi. hieu ve cam xuc van hanh lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach ky) or (((sach ty) OR (sach thu)))) lang xa hoi. hieu ve cam xuc van hanh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: so ((sach ky) or (((sach ty) OR (sach thu)))) lang xa hoi. hieu ve cam xuc van hanh lai cua tre*.