Perhaps you should try some spelling variations:
trien thuoc » trien thuc, trien thuong, tin thuoc
sach trien » sach tien, sach tren, sach thieu
thuoc sach » hoc sach, nuoc sach, thuat sach
hanh trinh » canh tranh, hanh chinh
doanh khoa » toan khoa
sach khoa » bach khoa, sach nha, anh khoa
khoa khau » khoa kham, khoa phau, khoa chau
khau tong » khau thong, khau cong, khau thuong
thuy hanh » thuc hanh, thuy anh, thuy canh
thu sach » tu sach, thuat sach, thu hoach
trinh tu » trinh ky, trinh do
tu doanh » su doanh, te doanh, ty doanh
khoa hoc » hoa hoc
hoc hong » hoc huong, hoc khong, hoc cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thu sach trien thuoc sach khoa khau tong ) or ( thuy hanh trinh tu doanh khoa hoc hong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu sach trien thuoc sach khoa khau tong ) OR ( thuy hanh trinh tu doanh khoa hoc hong )).
• Adding a wildcard symbol may retrieve word variants: (( thu sach trien thuoc sach khoa khau tong ) or ( thuy hanh trinh tu doanh khoa hoc hong ))*.