Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
doan phan » doanh phan, toan phan, doanh nhan
sach toi » sach doi, sach hoi, sach moi
khoa hoc » hoa hoc
dan phan » dan chan, van phan, dam phan
su sach » so sach, vu sach
toi tap » toi gap, toan tap, tong tap
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach toi tap, nghien cuu mon hoc nganh khoa hoc ma hoi ((dan phan) OR (doan phan)) van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach toi tap, nghien cuu mon hoc nganh khoa hoc ma hoi ((dan phan) OR (doan phan)) van".
• Adding a wildcard symbol may retrieve word variants: su sach toi tap, nghien cuu mon hoc nganh khoa hoc ma hoi ((dan phan) OR (doan phan)) van*.