Perhaps you should try some spelling variations:
nhanh chung » nhanh chuong, nhanh chong, nhanh hung
thuc nhanh » thuc hanh, thuc nhan, thuc thanh
cong thuc » cong tac
chung hoc » trung hoc, dung hoc, hung hoa
sach moi » sach hoi, bach mai, sach bai
sach doi » sach hoi, sach dao, sach bai
cuu cong » cua cong, thu cong, cac cong
nhan van » nhan dan, nhan va, phan van
va nhan » van nhan, ca nhan, va phan
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 moi) OR (sach doi)) tap, nghien cuu cong thuc nhanh chung hoc xa hoi va nhan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach moi) OR (sach doi)) tap, nghien cuu cong thuc nhanh chung hoc xa hoi va nhan van".
• Adding a wildcard symbol may retrieve word variants: tu ((sach moi) OR (sach doi)) tap, nghien cuu cong thuc nhanh chung hoc xa hoi va nhan van*.