Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hieu toan » bieu toan, thien toan, kiem toan
hoc nganh » hoc nhanh
thu bach » thi bach, thu sach, thu hoach
huu toan » huu tuan, cuu toan, huy toan
khoa hoc » hoa hoc
mai dap » mau dap, may dap, giai dap
hoc mai » hoc ma, hoc dai, hoc bai
mai hoi » mai khoi, dai hoi, lai hoi
va nhan » van nhan, ca nhan, va phan
nhan va » nhan tai, nhan dan, nhan tao

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu bach mai dap, nghien ((hieu toan) or (huu toan)) hoc nganh khoa hoc mai hoi va nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu bach mai dap, nghien ((hieu toan) OR (huu toan)) hoc nganh khoa hoc mai hoi va nhan va.
• Adding a wildcard symbol may retrieve word variants: thu bach mai dap, nghien ((hieu toan) or (huu toan)) hoc nganh khoa hoc mai hoi va nhan va*.