Perhaps you should try some spelling variations:
may nang » may nong, ky nang, cam nang
hieu van » hieu va, thien van, lieu va
so sach » so sanh, bo sach, co sach
van cam » van nam, van lam, van cau
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
y nang » ky nang, ly nang, day nang
v nang » va nang, vu nang, van nang
xuc va » duc va, tuc va, luc va
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ((((y nang) OR (may nang))) or (v nang)) x hoi. hieu van cam xuc va hanh di cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((((y nang) OR (may nang))) OR (v nang)) x hoi. hieu van cam xuc va hanh di cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((((y nang) OR (may nang))) or (v nang)) x hoi. hieu van cam xuc va hanh di cua vat".
• Adding a wildcard symbol may retrieve word variants: so sach ((((y nang) OR (may nang))) or (v nang)) x hoi. hieu van cam xuc va hanh di cua vat*.