Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
lai cua » dai cua, hai cua, lai chau
sai cua » dai cua, hai cua, bai cua
va danh » va dinh, va dan, va hanh
cac loc » cac lop, cac toc, cac hoc
hieu ve » hieu va, hieu van
ty nang » ky nang, ty xang, ly nang
ty hang » ly hang, ty xang, thi hang
ve cac » va cac, vien cac
loc va » hoc va, luc va
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 ((ty nang) or (ty hang)) x hoi. hieu ve cac loc va danh ((sai cua) OR (lai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ty nang) OR (ty hang)) x hoi. hieu ve cac loc va danh ((sai cua) OR (lai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((ty nang) or (ty hang)) x hoi. hieu ve cac loc va danh ((sai cua) OR (lai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ((ty nang) or (ty hang)) x hoi. hieu ve cac loc va danh ((sai cua) OR (lai cua)) tre*.