Perhaps you should try some spelling variations:
thuoc doanh » thuoc dang, thuoc dong, thuoc thanh
kien thuoc » kien thuc, bien thuoc, trien thuoc
tinh khong » tinh khang, tinh huong, benh khong
doanh khoa » toan khoa
thay tuong » thay trong, thao duong, tai tuong
khoa thay » khoa than, khoa thuy, khoe thay
toc sach » doc sach, thuoc sach, nuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
tuong me » tuong le, thuong ma, tuong den
me dinh » le dinh, me linh, ve dinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) or (hoc sach)) tinh khong chuyen đe ky thuat: kien thuoc doanh khoa thay tuong me dinh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) tinh khong chuyen đe ky thuat: kien thuoc doanh khoa thay tuong me dinh.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (hoc sach)) tinh khong chuyen đe ky thuat: kien thuoc doanh khoa thay tuong me dinh*.