Perhaps you should try some spelling variations:
doanh khoa » toan khoa
cach thoi » cac thoi, cach thuc
hoc doanh » hoa doanh, hoc danh, hoc dan
cach noi » hanh noi, anh noi, cau noi
cuu hoan » luu hoang, cuu van, cuu khoa
hoan hoc » hoa hoc, toan hoc, hoang hoa
khoa hoc » hoa hoc
hoc mai » hoc ma, hoc dai, hoc bai
mai hoi » mai khoi, dai hoi, lai hoi
va luan » vay luan, van luan, va quan

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) OR (cach noi)) tap, nghien cuu hoan hoc doanh khoa hoc mai hoi va luan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((cach thoi) OR (cach noi)) tap, nghien cuu hoan hoc doanh khoa hoc mai hoi va luan van".
• Adding a wildcard symbol may retrieve word variants: tu ((cach thoi) OR (cach noi)) tap, nghien cuu hoan hoc doanh khoa hoc mai hoi va luan van*.