Perhaps you should try some spelling variations:
su sach » so sach, vu sach
ty nang » ky nang, ty xang, ly nang
ty hang » ly hang, ty xang, thi hang
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
va hanh » van hanh, va thanh, va danh
vi cua » vai cua, di cua
cua te » cua tu
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: su sach ((ty nang) OR (ty hang)) x hoi. hieu ve pham duc va hanh vi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ty nang) OR (ty hang)) x hoi. hieu ve pham duc va hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ((ty nang) OR (ty hang)) x hoi. hieu ve pham duc va hanh vi cua te*.