Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cua viet » ca viet, hoa viet, cua vat
san cua » sang cua, ban cua, dan cua
xuc ban » duc ban, cuc ban, quoc ban
hieu va » lieu va, hieu qua
tu sach » thu sach, te sach, tu cach
ty nang » ky nang, ty xang, ty hang
su sach » so sach, vu sach
va cam » va cham, va cac, va cao
o hai » co hai, so hai, o lai
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) OR (su sach)) ty nang ((x hoi) OR (o hai)). hieu va cam xuc ban thanh san cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ty nang ((x hoi) OR (o hai)). hieu va cam xuc ban thanh san cua viet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) ty nang ((x hoi) OR (o hai)). hieu va cam xuc ban thanh san cua viet*.