Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
khong thuoc » khang thuoc, hong phuoc, dong thuoc
sach thue » sach thieu, sach tham, cach thuc
goc nganh » hoc nganh, hoc nhanh, cac nganh
sach thu » sach thieu, sach tham, cach thuc
thuoc xa » thuoc ma, thuoc va, thuoc la
nhan dan » phan dau, gian dan, nhan tai
cuu mot » cua mot, cuu mo, huu mot
va nhan » van nhan, ca nhan, va phan

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 thu) OR (sach thue)) trac, nghien cuu mot goc nganh khong thuoc xa hoi va nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach thu) OR (sach thue)) trac, nghien cuu mot goc nganh khong thuoc xa hoi va nhan dan".
• Adding a wildcard symbol may retrieve word variants: tu ((sach thu) OR (sach thue)) trac, nghien cuu mot goc nganh khong thuoc xa hoi va nhan dan*.