Perhaps you should try some spelling variations:
nganh dong » nganh cong, nhanh dong, nganh nong
hoc nganh » hoc nhanh
chau nhan » chan nhan, chau phan, ca nhan
thu sach » tu sach, thuat sach, thuoc sach
sach doi » sach hoi, sach moi, sach dao
cuu long » cuu cong, cuu tong, cuu nang
long hoc » long soc, long thuoc, duong hoc
dong hoc » dong co, dong luc
cau nhan » ca nhan, cu nhan, cam nhan
doi dap » hoi dap, doi dau, do dap
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: thu sach doi dap, nghien cuu long hoc nganh dong hoc ma hoi ((cau nhan) OR (chau nhan)) van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach doi dap, nghien cuu long hoc nganh dong hoc ma hoi ((cau nhan) OR (chau nhan)) van*".