Perhaps you should try some spelling variations:
ky trong » ly trong, ke trong, cay trong
trong xa » trong xay, trong ca, trong xu
ban hanh » ban hang
thai cua » than cua, tai cuc, tri cua
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu van
hieu va » lieu va, hieu qua
xuc ban » duc ban, cuc ban, quoc ban

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 ky trong xa hoi. ((hieu ve) OR (hieu va)) cam xuc ban hanh ((thai cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky trong xa hoi. ((hieu ve) OR (hieu va)) cam xuc ban hanh ((thai cua) OR (dai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky trong xa hoi. ((hieu ve) OR (hieu va)) cam xuc ban hanh ((thai cua) or (dai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky trong xa hoi. ((hieu ve) OR (hieu va)) cam xuc ban hanh ((thai cua) or (dai cua)) tre*.