Perhaps you should try some spelling variations:
dau tren » dau tien, dat tren, dau tieng
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
va cham » va chat, va tham
cua tre » cua te, cuu tre, cua triet
luc va » duc va, tuc va
loc va » hoc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky lang xa hoi. lieu va cham ((luc va) OR (loc va)) hanh vi ((dau tren) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang xa hoi. lieu va cham ((luc va) OR (loc va)) hanh vi ((dau tren) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky lang xa hoi. lieu va cham ((luc va) OR (loc va)) hanh vi ((dau tren) or (cua tre))".
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. lieu va cham ((luc va) OR (loc va)) hanh vi ((dau tren) or (cua tre))*.