Perhaps you should try some spelling variations:
sach tren » sach tien, sach tranh
sanh tri » thanh tri, dinh tri, minh tri
cach hoa » cach hoan, cach hoc, cach thoi
bach hoa » bach khoa, bach ha, cach hoan
he trong » he thong, he trung, le trong
tren thi » trien thi, tran thi, trieu thi
so sanh » do sanh
so sach » bo sach, co sach, hoc sach
thi anh » thi hanh, thi thanh, thich anh
anh ta » anh tu, anh va, anh tuan
ta he » tao he, tai he, ta ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( so sanh tri tue ((cach hoa) or (bach hoa)) he trong ) or ( so sach tren thi anh ta he trong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( so sanh tri tue ((cach hoa) OR (bach hoa)) he trong ) OR ( so sach tren thi anh ta he trong )).
• Adding a wildcard symbol may retrieve word variants: (( so sanh tri tue ((cach hoa) or (bach hoa)) he trong ) or ( so sach tren thi anh ta he trong ))*.