Perhaps you should try some spelling variations:
nghien huu » nghien cuu, nguyen huu, nhiem huu
canh thoi » cach thoi, hanh thoi, anh tho
hai doanh » lai doanh, nhap doanh, trai doanh
thu canh » thuc hanh, thu cong, thu ban
thoi dai » hoc dai, hoi dap, hoi dan
toan hoc » toan khoa, tin hoc
toan hoa » toan khoa, toan hoat, toan ho
nhan tai » hang tai, van tai, toan tai
van hoc » van hoa
hoc xa » hoc ma
xa hai » xa thai, xua hai, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu canh thoi dai, nghien huu ((toan hoc) OR (van hoc)) toan hoa hoc xa hai doanh nhan tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu canh thoi dai, nghien huu ((toan hoc) OR (van hoc)) toan hoa hoc xa hai doanh nhan tai".
• Adding a wildcard symbol may retrieve word variants: thu canh thoi dai, nghien huu ((toan hoc) OR (van hoc)) toan hoa hoc xa hai doanh nhan tai*.