Perhaps you should try some spelling variations:
thien van » thi van
danh doi » danh di, thanh doi, dung doi
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
duc van » duc va, duc manh, duc phan
doi cua » dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
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: tu sach ky nang x hoi. ((thien van) or (lieu va)) lam ((duc van) OR (duc tan)) danh doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. ((thien van) OR (lieu va)) lam ((duc van) OR (duc tan)) danh doi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. ((thien van) or (lieu va)) lam ((duc van) OR (duc tan)) danh doi cua tre*".