Perhaps you should try some spelling variations:
phai tuong » phan thuong, pham thuong, pham truong
bach khoa » anh khoa
phu thong » pho thong, phap thong, khau thong
sach tien » sach tren, sach thieu
sanh tri » thanh tri, dinh tri, minh tri
khoa phu » khoa phau, khoa thu, hoa phu
tien thi » trien thi, tiep thi, tien khi
thi benh » tai benh, tri benh, thi binh
benh kho » benh khong, benh phoi, benh hoc
kho phai » khong phai, khoan phai, khoa phau
so sanh » do sanh
te sach » toc sach
tri vu » tri va, thi vu, tri du

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 vu bach khoa phu thong ) or ( te sach tien thi benh kho phai tuong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( so sanh tri vu bach khoa phu thong ) OR ( te sach tien thi benh kho phai tuong )).
• Adding a wildcard symbol may retrieve word variants: (( so sanh tri vu bach khoa phu thong ) or ( te sach tien thi benh kho phai tuong ))*.