Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
thanh nhan » thanh phan, thanh san, thanh toan
danh nhan » doanh nhan, benh nhan, dung nhan
sach moi » sach doi, sach hoi, bach mai
cuu dong » cuu cong, cuu tong, cuu long
co nganh » hoc nganh, cac nganh, moi nganh
khoa hoc » hoa hoc
tu sach » thu sach, su sach, te sach
moi tap » moi tai, toi tap
ma hoc » va hoc, ma hoa, mo hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach moi tap, nghien cuu dong co nganh khoa hoc ma hoc ((danh nhan) OR (thanh nhan)) van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach moi tap, nghien cuu dong co nganh khoa hoc ma hoc ((danh nhan) OR (thanh nhan)) van".
• Adding a wildcard symbol may retrieve word variants: tu sach moi tap, nghien cuu dong co nganh khoa hoc ma hoc ((danh nhan) OR (thanh nhan)) van*.