Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
luc nganh » luc ngan, chuc nganh, luat nganh
mach hoc » cach hoc, anh hoc, bac hoc
dich hoc » sinh hoc, hinh hoc, tinh hoc
cuu dong » cuu cong, cuu tong, cuu long
dong luc » nang luc
khoa hoc » hoa hoc
van pham » san pham, van phan, van phat
hoc bai » hoc dai, hoc giai
bai hoi » bai choi, bai hoc, dai hoi
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: te ((mach hoc) or (dich hoc)) tap, nghien cuu dong luc nganh khoa hoc bai hoi van pham van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((mach hoc) OR (dich hoc)) tap, nghien cuu dong luc nganh khoa hoc bai hoi van pham van.
• Adding a wildcard symbol may retrieve word variants: te ((mach hoc) or (dich hoc)) tap, nghien cuu dong luc nganh khoa hoc bai hoi van pham van*.