Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
doanh khoa » toan khoa
hoc doanh » hoa doanh, hoc danh, hoc dan
sach hoc » cach hoc, sach hoi, mach hoc
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
khoa hoc » hoa hoc
va phan » van phan, va phat, va phap
hoc xa » hoc ma

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

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