Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
toc mach » toc sach, hoc mac, tim mach
mach hoc » cach hoc, dich hoc, anh hoc
tinh hoc » tin hoc, hinh hoc, trinh hoa
khoa hoc » hoa hoc
van nhan » van phan, van thanh, danh nhan
nhan van » nhan dan, nhan va, phan van
hai van » thai van, ha van, hai tan
va hai » van hai, va chai, va khai

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc mach hoc tap, nghien cuu ((tinh hoc) OR (sinh hoc)) nganh khoa hoc va hai van nhan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc mach hoc tap, nghien cuu ((tinh hoc) OR (sinh hoc)) nganh khoa hoc va hai van nhan van".
• Adding a wildcard symbol may retrieve word variants: toc mach hoc tap, nghien cuu ((tinh hoc) OR (sinh hoc)) nganh khoa hoc va hai van nhan van*.