Perhaps you should try some spelling variations:
dang xay » dang van, van xay
tu sach » thu sach, su sach, te sach
luc van » luoc van, luu van, duc van
xuc van » duc van, xuc ban, thuc van
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
lang xa » lang ha, lang van
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
anh vi » hanh vi, anh va, anh ve
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: tu sach ky ((lang xa) or (dang xay)) hoi. hieu ve cam ((xuc van) or (luc van)) anh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((lang xa) OR (dang xay)) hoi. hieu ve cam ((xuc van) OR (luc van)) anh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((lang xa) or (dang xay)) hoi. hieu ve cam ((xuc van) or (luc van)) anh vi cua tre*.