Perhaps you should try some spelling variations:
cach thoi » cac thoi, cach thuc, cach noi
nhan khoa » nha khoa, khuan khoa, toan khoa
khai luan » khau luan, khai tuan, thai luan
luan luan » quan luan, luan luong, luan hoan
sach hoc » cach hoc, sach hoi, mach hoc
cuu dong » cuu cong, cuu tong, cuu long
dong luc » nang luc
luc nhan » luc nhat, cu nhan, tue nhan
khoa hoc » hoa hoc
xa khai » va khai, xa hai, xa khoi
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: te ((sach hoc) or (cach thoi)) tap, nghien cuu dong luc nhan khoa hoc xa khai luan luan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach hoc) OR (cach thoi)) tap, nghien cuu dong luc nhan khoa hoc xa khai luan luan van.
• Adding a wildcard symbol may retrieve word variants: te ((sach hoc) or (cach thoi)) tap, nghien cuu dong luc nhan khoa hoc xa khai luan luan van*.