Perhaps you should try some spelling variations:
sach thue » sach thieu, sach tham, cach thuc
lieu van » lieu va, hieu van, sieu van
dan hanh » dang hanh, dan khanh, dan thanh
thuc dan » thuc hanh, hoc dan, thuc vat
sach thu » sach thieu, sach tham, cach thuc
can thuc » dan thuc, van thuc, cay thuc
xach tay » canh tay
xang xa » lang xa, mang xa, ang xa
van can » van canh, van ban, ban can
cua tre » cua te, cuu tre, cua triet
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: su ((xach tay) or (((sach thu) OR (sach thue)))) xang xa hoi. lieu van can thuc dan hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((xach tay) OR (((sach thu) OR (sach thue)))) xang xa hoi. lieu van can thuc dan hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((xach tay) or (((sach thu) OR (sach thue)))) xang xa hoi. lieu van can thuc dan hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: su ((xach tay) or (((sach thu) OR (sach thue)))) xang xa hoi. lieu van can thuc dan hanh vi cua tre*.