Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
van cam » van nam, van lam, van cau
van dau » van dao, phan dau
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu
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: tu sach y nang x hoi. hieu ((van cam) or (van dau)) tuc va hanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu ((van cam) OR (van dau)) tuc va hanh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu ((van cam) or (van dau)) tuc va hanh vi cua tu*.