Perhaps you should try some spelling variations:
nganh thong » nganh khong, nganh cong, nhanh chong
nghien cua » nghien cuu, nghiep cua, nghiep vua
hoc nganh » hoc nhanh
hoc doanh » hoa doanh, hoc danh, hoc nhanh
sach hoi » sach doi, sach moi, cach thoi
hoi thoi » hoi thoai, hoi thi, moi thoi
cua dong » chua dong, cua cong, cua dang
dong hoc » dong co, dong luc
nhan van » nhan dan, nhan va, phan van
tu sach » thu sach, su sach, te sach
hoc van » hoc va, hoc vat, hoc phan

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 hoi thoi, nghien cua dong hoc nganh thong ((hoc van) OR (hoc dan)) hoc doanh nhan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoi thoi, nghien cua dong hoc nganh thong ((hoc van) OR (hoc dan)) hoc doanh nhan van".
• Adding a wildcard symbol may retrieve word variants: tu sach hoi thoi, nghien cua dong hoc nganh thong ((hoc van) OR (hoc dan)) hoc doanh nhan van*.