Perhaps you should try some spelling variations:
nghien chuc » nghien cuu, nghiem thuc, nghiep thuc
nganh khoa » nganh hoa, nganh khong, doanh khoa
cach thoi » cac thoi, cach thuc, cach noi
luc nganh » luc ngan, chuc nganh, luat nganh
thoi dai » hoc dai, hoi dap, hoi dan
khoa hoc » hoa hoc
van nhan » van phan, van thanh, danh nhan
su cach » su sach, tu cach, su cac
va nhan » ca nhan, va phan, va nha
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cach thoi dai, nghien chuc nang luc nganh khoa hoc xa hoi ((va nhan) OR (van nhan)) tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cach thoi dai, nghien chuc nang luc nganh khoa hoc xa hoi ((va nhan) OR (van nhan)) tai".
• Adding a wildcard symbol may retrieve word variants: su cach thoi dai, nghien chuc nang luc nganh khoa hoc xa hoi ((va nhan) OR (van nhan)) tai*.