Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
chau phu » chau phi, chau au, chau tho
hieu ve » hieu van
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
phu va » phuc va, phu la, phu da
vi cuu » vi luu, vinh cuu
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: thu sach y nang x hoi. ((hieu ve) or (hieu va)) chau phu va hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang x hoi. ((hieu ve) OR (hieu va)) chau phu va hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang x hoi. ((hieu ve) or (hieu va)) chau phu va hanh vi cuu tre*.