Perhaps you should try some spelling variations:
phau thong » phap thong, khau thong, phan thong
doanh khoa » toan khoa
cac phuong » cac truong
van doanh » toan doanh, van dong, van thanh
khoa phau » hoa phan, khoa kham, khoa than
sach tham » sach nha
phuong he » phuong te, phuong de, phuong ke
sach thu » sach thue, sach thieu, cach thuc
tu sach » thu sach, su sach, te sach
thu van » thuc van, thuy van, tu van
tham ve » tam ve, thanh ve
ve cac » va cac, vien cac

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 thu van doanh khoa phau thong ) or ( tu sach tham ve cac phuong he thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach thu van doanh khoa phau thong ) OR ( tu sach tham ve cac phuong he thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach thu van doanh khoa phau thong ) or ( tu sach tham ve cac phuong he thong ))*.