Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
danh nhan » doanh nhan, thanh nhan, benh nhan
sach hoc » sach hoi, mach hoc, sach duoc
cach hoc » cach thuc, cach thoi, dich hoc
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
nhan va » nhan tai, nhan dan, nhan tao
ma hop » mau hop, ma hoa, va hop

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

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