Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
luc nganh » luc ngan, chuc nganh, luat nganh
sach hoc » cach hoc, sach hoi, mach hoc
cuu nang » chuc nang, cam nang, cuu van
phan van » pham van, thanh van, luan van
vu sach » vu bach, su sach, vu khach
va phan » van phan, va phat, va phap

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

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