Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
may nang » may nong, ky nang, cam nang
va danh » va dinh, va dan, va hanh
v nang » va nang, vu nang, van nang
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((may nang) OR (v nang)) ma hoa. lieu va cam xuc va danh ((vi cua) OR (di cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((may nang) or (v nang)) ma hoa. lieu va cam xuc va danh ((vi cua) OR (di cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: toc sach ((may nang) or (v nang)) ma hoa. lieu va cam xuc va danh ((vi cua) OR (di cua)) tre*.