Perhaps you should try some spelling variations:
lang van » dang van, tang van, hoang van
sach ky » sac ky, sach y, sach ty
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
su sach » so sach, vu sach
lang xa » lang ha, dang xay
cua tre » cua te, cuu tre, cua triet
xuc va » tuc va, luc va, xac va
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 sach ky ((lang xa) OR (lang van)) hoi. hieu ve cham ((xuc va) or (duc va)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((lang xa) OR (lang van)) hoi. hieu ve cham ((xuc va) OR (duc va)) hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((lang xa) OR (lang van)) hoi. hieu ve cham ((xuc va) or (duc va)) hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((lang xa) OR (lang van)) hoi. hieu ve cham ((xuc va) or (duc va)) hanh vi cua tre*.