Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
dinh cuu » dinh chi
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
va danh » va dinh, va hanh, dia danh
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
va dan » ca dan, va dao, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach y nang xa hoi. hieu ((ve cam) or (va cham)) duc ((va danh) OR (va dan)) dinh cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y nang xa hoi. hieu ((ve cam) OR (va cham)) duc ((va danh) OR (va dan)) dinh cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y nang xa hoi. hieu ((ve cam) or (va cham)) duc ((va danh) OR (va dan)) dinh cuu tre".
• Adding a wildcard symbol may retrieve word variants: toc sach y nang xa hoi. hieu ((ve cam) or (va cham)) duc ((va danh) OR (va dan)) dinh cuu tre*.