Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, anh khoa
doanh khoa » toan khoa
sach hoc » cach hoc, sach hoi, mach hoc
cuu nang » chuc nang, cam nang, cuu van
nang hoc » nang doc, nang luc, dong hoc
van phan » van phong, van thanh, luan phan
tu sach » thu sach, su sach, te sach
hoi van » hoi va, hoi dan, hai van
phan va » phan van, nhan va, han va
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: tu sach hoc tap, nghien cuu nang hoc ((nganh khoa) or (doanh khoa)) hoc xa hoi van phan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoc tap, nghien cuu nang hoc ((nganh khoa) OR (doanh khoa)) hoc xa hoi van phan va.
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien cuu nang hoc ((nganh khoa) or (doanh khoa)) hoc xa hoi van phan va*.