Perhaps you should try some spelling variations:
than thong » than thuong, toan thong, tran thong
tren nguoi » ten nguoi, truyen nguoi, trien nguon
sanh tren » sach tren, lanh tren, sinh tren
nguoi anh » nguoi lanh, nuoi anh, nguoi thanh
khoa than » khoa luan, hoa thai, hoa tan
sach bien » cach bien, sach tien, mach dien
bien thuc » kien thuc, bien phuc, bien phu
thuc sach » thuoc sach, thu sach, thuc cach
thu thong » thuy thong, thu thang, thu tuong
anh khoa » doanh khoa, hang khoa
so sanh » do sanh
su sach » so sach, vu sach
nha thu » nham thu, nha tu, ha thu

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 tren nguoi anh khoa than thong ) or ( su sach bien thuc sach nha thu thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( so sanh tren nguoi anh khoa than thong ) OR ( su sach bien thuc sach nha thu thong )).
• Adding a wildcard symbol may retrieve word variants: (( so sanh tren nguoi anh khoa than thong ) or ( su sach bien thuc sach nha thu thong ))*.