Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
doanh khoa » toan khoa
hoc doanh » hoa doanh, hoc danh, hoc dan
sach doi » sach hoi, sach moi, sach dao
khoa hoc » hoa hoc
te sach » toc sach
doi dap » hoi dap, doi dau, do dap
mot hoc » mon hoc, mo hoc, mot goc
hoc xa » hoc ma
va nha » va nho, ve nha

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach doi dap, nghien cua mot hoc doanh khoa hoc xa hoi ((va nha) or (ca nhan)) van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach doi dap, nghien cua mot hoc doanh khoa hoc xa hoi ((va nha) OR (ca nhan)) van.
• Adding a wildcard symbol may retrieve word variants: te sach doi dap, nghien cua mot hoc doanh khoa hoc xa hoi ((va nha) or (ca nhan)) van*.