Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
cach thoi » cac thoi, cach thuc, cach noi
hoa nganh » hoc nganh, khoi nganh, hoa doanh
thoi tap » toi tap, hoc tap, thoi dai
cong hoa » dong hoa, dong hoc, hang hoa
dung hoc » dong hoc, trung hoc, dung khoa
tu cach » tu cac
va luan » vay luan, van luan, va quan
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cach thoi tap, nghien cua cong hoa nganh ((dung hoc) OR (dung thuoc)) ma hoi va luan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cach thoi tap, nghien cua cong hoa nganh ((dung hoc) OR (dung thuoc)) ma hoi va luan van".
• Adding a wildcard symbol may retrieve word variants: tu cach thoi tap, nghien cua cong hoa nganh ((dung hoc) OR (dung thuoc)) ma hoi va luan van*.