Perhaps you should try some spelling variations:
nganh thuong » anh thuong, doanh thuong, nang thuong
thuong ho » tuong ho, truong hoc, thuong chi
thu sach » tu sach, thuat sach, thuoc sach
sach hoc » cach hoc, sach hoi, mach hoc
cuu tong » cuu cong, cuu tinh, huu tung
co nganh » hoc nganh, cac nganh, moi nganh
nhan dan » gian dan, nhan tai
phan dau » phan tu, hang dau
tong co » tong cot, trong co, thong co
hoi van » hoi va, hoi dan, hai van
ho xa » hoa xa, hoc xa, cho xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach hoc tap, nghien cuu tong co nganh thuong ho xa hoi van ((nhan dan) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach hoc tap, nghien cuu tong co nganh thuong ho xa hoi van ((nhan dan) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: thu sach hoc tap, nghien cuu tong co nganh thuong ho xa hoi van ((nhan dan) or (phan dau))*.