Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
dang xay » dang van, van xay
sach xu » sach xa, cach xu, mach xu
xu dang » su dang, vu dang, xo dang
xay hoi » xa hoi, tay hoi, cay phoi
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
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: thu sach xu dang xay hoi. ((hieu ve) or (lieu va)) cham ((xuc van) or (cuu van)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach xu dang xay hoi. ((hieu ve) OR (lieu va)) cham ((xuc van) OR (cuu van)) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach xu dang xay hoi. ((hieu ve) or (lieu va)) cham ((xuc van) or (cuu van)) hanh vi cua tre*.