Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
hai cua » thai cua, dai cua, hoi cua
lai cua » dai cua, lai chau, thai cua
hieu va » lieu va, hieu qua
ty nang » ky nang, ty hang, ly nang
co loi » co hoi
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va

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 xang)) co loi. hieu va cam xuc va thanh ((lai cua) or (hai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty nang) OR (ty xang)) co loi. hieu va cam xuc va thanh ((lai cua) OR (hai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ty nang) OR (ty xang)) co loi. hieu va cam xuc va thanh ((lai cua) or (hai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: su sach ((ty nang) OR (ty xang)) co loi. hieu va cam xuc va thanh ((lai cua) or (hai cua)) tre*.