Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
cham tuc » nham thuc, pham thuc, tham thuc
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
va danh » va dinh, va dan, va hanh
doi cua » hoi cua
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
di cua » de cua, do cua, da 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 y nang xa hoi. lieu va cham tuc va danh ((((di cua) OR (doi cua))) OR (dai cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y nang xa hoi. lieu va cham tuc va danh ((((di cua) OR (doi cua))) or (dai cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: toc sach y nang xa hoi. lieu va cham tuc va danh ((((di cua) OR (doi cua))) or (dai cua)) tre*.