Perhaps you should try some spelling variations:
xanh khoa » doanh khoa, nganh khoa, xanh khong
sach hoc » cach hoc, sach hoi, mach hoc
cuu tong » cuu cong, cuu tinh, huu tung
tong cuc » trong cuoc, thong cua, cong chuc
anh khoa » doanh khoa, hang khoa
ha doanh » hoa doanh, nha doanh, va doanh
nhan van » nhan dan, nhan va, phan van
te sach » toc sach
ma ha » ma hoa, mai ha, my ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach hoc tap, nghien cuu tong cuc ((anh khoa) or (xanh khoa)) hoc ma ha doanh nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach hoc tap, nghien cuu tong cuc ((anh khoa) OR (xanh khoa)) hoc ma ha doanh nhan van.
• Adding a wildcard symbol may retrieve word variants: te sach hoc tap, nghien cuu tong cuc ((anh khoa) or (xanh khoa)) hoc ma ha doanh nhan van*.