Perhaps you should try some spelling variations:
sach thue » sach thieu, sach tham, cach thuc
sach thu » sach thieu, sach tham, cach thuc
hanh va » hang va, hanh vi
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac

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 thu) OR (sach thue)) nang x ho. hieu ve cac xuc van ((anh viet) or (hanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thu) OR (sach thue)) nang x ho. hieu ve cac xuc van ((anh viet) OR (hanh va)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach thu) OR (sach thue)) nang x ho. hieu ve cac xuc van ((anh viet) or (hanh va)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach thu) OR (sach thue)) nang x ho. hieu ve cac xuc van ((anh viet) or (hanh va)) cua tre*.