Perhaps you should try some spelling variations:
thien van » thi van
hoc thuc » hoc huu
dan chan » dan gian, dan ca, van chat
su sach » so sach, vu sach
tai cua » thai cua, tai cuc, tri cua
dan han » dan than, dan hanh, dan phan
van hoc » van hoa
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
cua tre » cua te, cuu tre, cua triet

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: su sach ky ((nang xa) OR (nang ma)) hoi. thien van hoc thuc ((dan han) OR (dan chan)) tai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((nang xa) or (nang ma)) hoi. thien van hoc thuc ((dan han) OR (dan chan)) tai cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang xa) or (nang ma)) hoi. thien van hoc thuc ((dan han) OR (dan chan)) tai cua tre*.