Perhaps you should try some spelling variations:
trung doanh » trong doanh, trung thanh, dung doanh
phan thuong » hang thuong, phan xuong
doanh khoa » toan khoa
thuoc sach » hoc sach, nuoc sach, thuat sach
hoi khong » khoi khong, hoa khong, noi khong
dao thuoc » cao thuoc, tao thuoc, dang thuoc
xa trung » xa truong, ba trung, ha trung
khoa hoi » khoan hoi, khoa hoc, khoa doi
sach dao » lanh dao
vu sach » vu bach, su sach, vu khach
sach xa » sach nha, sach bai
te sach » toc sach
sach co » sach lo, sach cap, sach che

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( vu sach xa trung doanh khoa hoi khong ) or ( te sach dao thuoc sach co phan thuong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( vu sach xa trung doanh khoa hoi khong ) OR ( te sach dao thuoc sach co phan thuong )).
• Adding a wildcard symbol may retrieve word variants: (( vu sach xa trung doanh khoa hoi khong ) or ( te sach dao thuoc sach co phan thuong ))*.