Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
cuu tong » cuu cong, cuu tinh, huu tung
tong hoc » tuong hoc, thong hoc, trong hoc
khoa hoc » hoa hoc
van luan » van quan, van tuan, von luan
te mach » ke mach, tim mach, tao mach
te sach » toc sach
hoc bai » hoc dai, hoc giai
bai hoi » bai choi, bai hoc, dai hoi
hoi van » hoi va, hoi dan, hai van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te mach) OR (te sach)) hoc tap, nghien cuu tong hoc nganh khoa hoc bai hoi van luan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te mach) OR (te sach)) hoc tap, nghien cuu tong hoc nganh khoa hoc bai hoi van luan van".
• Adding a wildcard symbol may retrieve word variants: ((te mach) OR (te sach)) hoc tap, nghien cuu tong hoc nganh khoa hoc bai hoi van luan van*.