Perhaps you should try some spelling variations:
thien van » thi van
van chat » cao chat
su triet » su viet, ve triet
danh cau » danh dau, danh ca, danh hau
chat doc » chat hoc, chau doc, thuat doc
va danh » va dinh, va dan, va hanh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
su tien » su kien, su hien, tu tieng
doc va » duoc va, hoc va, duc 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 ky ((nang xa) or (nang ma)) hoi. thien van chat doc va danh cau ((su triet) OR (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang xa) OR (nang ma)) hoi. thien van chat doc va danh cau ((su triet) OR (su tien)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((nang xa) or (nang ma)) hoi. thien van chat doc va danh cau ((su triet) OR (su tien))".
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang xa) or (nang ma)) hoi. thien van chat doc va danh cau ((su triet) OR (su tien))*.