Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
danh lai » danh sai, gianh lai, dinh lam
pham duy » pham duc
tu sach » su sach, te sach, tu cach
hieu va » lieu va, hieu qua
lai cua » dai cua, hai cua, lai chau
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu van
nang xa » nang x, lang xa, nang ma
duy va » duy vat, duy van, day va

You may be able to get more results by adjusting your search query.

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