Perhaps you should try some spelling variations:
nganh thuong » anh thuong, doanh thuong, nang thuong
thuat sach » thuat lanh, thuat san
khoi nganh » hoc nganh, moi nganh
long khoi » long khoa, tong khoi, xong khoi
thuong ho » tuong ho, truong hoc, thuong chi
thu sach » tu sach, thuoc sach, thu hoach
cuu long » cuu cong, cuu tong, cuu nang
van nhan » van phan, van thanh, danh nhan
nhan dan » phan dau, gian dan, nhan tai
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) or (thuat sach)) hoc tap, nghien cuu long khoi nganh thuong ho xa hoi van nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat sach)) hoc tap, nghien cuu long khoi nganh thuong ho xa hoi van nhan dan.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuat sach)) hoc tap, nghien cuu long khoi nganh thuong ho xa hoi van nhan dan*.