Perhaps you should try some spelling variations:
thuoc doanh » thuoc dang, thuoc dong, thuoc thanh
luong thuoc » luong thuc, long thuoc, luong theo
doanh khoa » toan khoa
nghiep cua » nghiep vua, nghiep luan, nghien cuu
nghien cu » nghien cuu, nghiep cau, nghiep vu
cach thoi » cac thoi, cach thuc, cach noi
khoa hoc » hoa hoc
phan van » pham van, thanh van, luan van
thoi tap » toi tap, hoc tap, thoi dai
hoc mai » hoc ma, hoc dai, hoc bai
mai hoi » mai khoi, dai hoi, lai hoi
va phan » van phan, va phat, va phap
su cach » su sach, tu cach, su cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cach thoi tap, ((nghien cu) or (nghiep cua)) luong thuoc doanh khoa hoc mai hoi va phan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cach thoi tap, ((nghien cu) OR (nghiep cua)) luong thuoc doanh khoa hoc mai hoi va phan van.
• Adding a wildcard symbol may retrieve word variants: su cach thoi tap, ((nghien cu) or (nghiep cua)) luong thuoc doanh khoa hoc mai hoi va phan van*.