Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
tham tuc » tham thuc, thai tuc, nham thuc
nang xa » nang x, lang xa, nang ma
va tham » van tham, va cham, va thanh
va danh » va dinh, va dan, va hanh
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
di cua » dai cua, doi cua, do cua
de cua » le cua, te cua, dieu cua

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. lieu va tham tuc va danh ((di cua) OR (de cua)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y nang xa hoi. lieu va tham tuc va danh ((di cua) OR (de cua)) triet".
• Adding a wildcard symbol may retrieve word variants: toc sach y nang xa hoi. lieu va tham tuc va danh ((di cua) OR (de cua)) triet*.