Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
luc nganh » luc ngan, chuc nganh, luat nganh
sach hoc » cach hoc, sach hoi, sach duoc
mach hoc » cach hoc, dich hoc, anh hoc
cuu dong » cuu cong, cuu tong, cuu long
dong luc » nang luc
khoa hoc » hoa hoc
va pham » van pham, va phat, va phap
ma hoi » mai hoi, xa hoi, ma hoa

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 hoc) OR (mach hoc)) tap, nghien cuu dong luc nganh khoa hoc ma hoi va pham van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach hoc) OR (mach hoc)) tap, nghien cuu dong luc nganh khoa hoc ma hoi va pham van".
• Adding a wildcard symbol may retrieve word variants: tu ((sach hoc) OR (mach hoc)) tap, nghien cuu dong luc nganh khoa hoc ma hoi va pham van*.