Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
xuc van » duc van, luc van, vuc van
sach lo » sach dao, sach doi, sach hoi
lang xa » lang ha, dang xay, lang van
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
ve cac » vien cac
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach lo) or (sach ty)) lang xa hoi. hieu ((ve cac) or (va cac)) xuc van hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach lo) OR (sach ty)) lang xa hoi. hieu ((ve cac) OR (va cac)) xuc van hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: vu ((sach lo) or (sach ty)) lang xa hoi. hieu ((ve cac) or (va cac)) xuc van hanh vi cua tre*.