Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
doanh dung » doanh chung, doanh nhung, doanh quang
hoa doanh » toan doanh, hoa dan
thoi tap » hoc tap, thoi dai, hoi tai
cong hoa » dong hoa, dong hoc, hang hoa
dung hoc » dong hoc, dung thuoc, trung hoc
tu cach » tu cac
toi tap » toi gap, toan tap, tong tap
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) OR (toi tap)), nghien cua cong hoa doanh dung hoc ma hoi va luan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cach ((thoi tap) OR (toi tap)), nghien cua cong hoa doanh dung hoc ma hoi va luan van".
• Adding a wildcard symbol may retrieve word variants: tu cach ((thoi tap) OR (toi tap)), nghien cua cong hoa doanh dung hoc ma hoi va luan van*.