Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
luc nganh » luc ngan, chuc nganh, luat nganh
toc sach » hoc sach, doc sach, thuoc sach
sach hoc » cach hoc, sach hoi, mach hoc
cuu long » cuu cong, cuu tong, cuu nang
long luc » dong luc, long cuc, long lich
khoa hoc » hoa hoc
nhan tai » hang tai, van tai, toan tai
nhan va » nhan dan, nhan tao, phan van
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: toc sach hoc tap, nghien cuu long luc nganh khoa hoc xa hoi va ((nhan va) or (nhan tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach hoc tap, nghien cuu long luc nganh khoa hoc xa hoi va ((nhan va) OR (nhan tai)).
• Adding a wildcard symbol may retrieve word variants: toc sach hoc tap, nghien cuu long luc nganh khoa hoc xa hoi va ((nhan va) or (nhan tai))*.