Perhaps you should try some spelling variations:
te sach » toc sach
va hanh » van hanh, va thanh, va danh
ve chat » va chat, van chat
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
long ha » dong ha, cong ha, dong hoa
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
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: te sach ky ((lang xa) OR (long ha)) hoi. hieu ((ve chat) OR (va cam)) duc va hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((lang xa) OR (long ha)) hoi. hieu ((ve chat) OR (va cam)) duc va hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((lang xa) OR (long ha)) hoi. hieu ((ve chat) OR (va cam)) duc va hanh vi cua tre*.