Perhaps you should try some spelling variations:
ban hang » ngan hang
hang dam » chang dam, hang dau, hang nam
su sach » so sach, vu sach
ky lang » ky dang, ky tang, tay lang
hieu va » lieu va, hieu qua
xuc ban » duc ban, cuc ban, quoc ban
so viet » hoc viet
va cam » va cham, va cac, va cao
dam so » dai so, nam so, dap so

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 ((ky lang) OR (ky nang)) xa hoi. hieu va cam xuc ban hang dam so viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky lang) OR (ky nang)) xa hoi. hieu va cam xuc ban hang dam so viet".
• Adding a wildcard symbol may retrieve word variants: su sach ((ky lang) OR (ky nang)) xa hoi. hieu va cam xuc ban hang dam so viet*.