Perhaps you should try some spelling variations:
doanh thuong » doan phuong, anh thuong, dinh thuong
thuat sach » thuat lanh, thuat san
thuong hoa » huong hoa, phuong hoa, thuong ho
moi doanh » voi doanh, doi doanh, mot doanh
thu sach » tu sach, thuoc sach, thu hoach
cuu tong » cuu cong, cuu tinh, huu tung
tong moi » trong moi, truong moi, trong mot
van nhan » van phan, van thanh, danh nhan
nhan dan » phan dau, gian dan, nhan tai
hoi van » hoi va, hoi dan, hai van

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 tong moi doanh thuong hoa xa hoi van nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (thuat sach)) hoc tap, nghien cuu tong moi doanh thuong hoa xa hoi van nhan dan".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (thuat sach)) hoc tap, nghien cuu tong moi doanh thuong hoa xa hoi van nhan dan*.