Perhaps you should try some spelling variations:
phai tuong » phan thuong, pham thuong, pham truong
doanh khoa » toan khoa
bach khoa » anh khoa
khoa phai » khoan phai, khoa phau, khong phai
pho thong » he thong
sach tri » sach tai, sach tren, sach truc
tue bach » truc bach, thi bach, vu bach
tri luat » trinh luat, thai luat, tri cua
khoa pho » khoa phu, khoa khoa, khoa phau
tu sach » thu sach, su sach, te sach

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 tri tue bach khoa phai tuong ) or ( tu sach tri luat doanh khoa pho thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach tri tue bach khoa phai tuong ) OR ( tu sach tri luat doanh khoa pho thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach tri tue bach khoa phai tuong ) or ( tu sach tri luat doanh khoa pho thong ))*.