Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
nang lai » nang tai, mang lai, nang cai
cao xuc » cam xuc, cao duc, cao suc
lai cua » dai cua, hai cua, lai chau
vai cua » dai cua, hai cua, bai cua
va danh » va dinh, va dan, va hanh
tu sach » su sach, te sach, tu cach
hieu va » lieu va, hieu qua
lai hoi » dai hoi, lai hoa, lai roi
xuc va » duc va, tuc va, luc va
va cao » va cac, va co, va dao

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 (thu sach)) ky nang lai hoi. hieu va cao xuc va danh ((vai cua) OR (lai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang lai hoi. hieu va cao xuc va danh ((vai cua) OR (lai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ky nang lai hoi. hieu va cao xuc va danh ((vai cua) OR (lai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang lai hoi. hieu va cao xuc va danh ((vai cua) OR (lai cua)) triet*.