Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
dong chuc » cong chuc, don chuc, dong phuc
sach hoi » sach doi, sach moi, cach thoi
dong cuc » dong luc, dong cua, tong cuc
khoa hoc » hoa hoc
su sach » so sach, vu sach
hoi tai » hoc tai, hoi trac
va nhan » van nhan, ca nhan, va phan
nhan va » nhan tai, nhan dan, nhan tao
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 sach hoi tai, nghien cuu ((dong chuc) OR (dong cuc)) nganh khoa hoc xa hoi va nhan va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach hoi tai, nghien cuu ((dong chuc) OR (dong cuc)) nganh khoa hoc xa hoi va nhan va".
• Adding a wildcard symbol may retrieve word variants: su sach hoi tai, nghien cuu ((dong chuc) OR (dong cuc)) nganh khoa hoc xa hoi va nhan va*.