Perhaps you should try some spelling variations:
thien van » thi van
thanh lai » thanh hai, thanh lap, thanh loi
thu sach » thuat sach, thuoc sach, thu hoach
ba thanh » ban thanh, bac thanh, va thanh
tu sach » su sach, te sach, tu cach
van cac » van hac, van cau, van bac
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
y nang » ly nang, v nang, may nang
dan ba » dan bac, dan ca, dan va

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)) ((y nang) OR (ky nang)) xa hoi. thien van cac dan ba thanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ((y nang) OR (ky nang)) xa hoi. thien van cac dan ba thanh lai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ((y nang) OR (ky nang)) xa hoi. thien van cac dan ba thanh lai cua tre*".