Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
toc sach » hoc sach, doc sach, nuoc sach
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
hieu ve » hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
cam tu » cam thu, nam tu, dam tu
tu van » tu va
y lang » o lang, _ lang, tay lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((te sach) OR (toc sach))) or (thuoc sach)) y lang xa hoi. hieu ve cam tu van hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((te sach) OR (toc sach))) OR (thuoc sach)) y lang xa hoi. hieu ve cam tu van hanh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((te sach) OR (toc sach))) or (thuoc sach)) y lang xa hoi. hieu ve cam tu van hanh vai cua tre*".