Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
cham tuc » nham thuc, pham thuc, tham thuc
dinh dai » dinh dat, sinh dai, dinh dao
su triet » su viet, ve triet
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
va dinh » van dinh, va kinh, va tinh
su tien » su kien, su hien, tu tieng
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa

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