Perhaps you should try some spelling variations:
phai tuong » phan thuong, pham thuong, pham truong
thuoc sach » hoc sach, nuoc sach, thuat sach
dinh khoa » sinh khoa, doanh khoa, trinh khoa
khoa phai » khoan phai, khoa phau, khong phai
tri thuoc » tri thuc, tri hoc, tin thuoc
pho thong » he thong
sach tac » sach bac, sach tai, sach tham
hoc dinh » hoc sinh, hoc kinh, hoc danh
sach tri » sach tai, sach tren, sach truc
tu sach » thu sach, su sach, te sach
tac hoc » trac hoc, toc hoc, bac hoc
sach xa » sach dao, sach nha, sach bai
xa pho » xua pho, xa phu, xa phong

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