Perhaps you should try some spelling variations:
nganh cong » nhanh chong, thanh cong
hoc nganh » hoc nhanh
sach hoc » sach hoi, mach hoc, sach duoc
cach hoc » cach thuc, cach thoi, dich hoc
cong coc » cong cuoc, cong cac, cong co
gian dan » gian lang
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
va gian » va gianh, van gian, va giai
coc ha » hoc ha, toc ha, coc va
ha hoi » hoa hoi, ha noi, xa hoi

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 hoc) or (cach hoc)) tap, nghien cuu mon hoc nganh cong coc ha hoi va gian dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach hoc) OR (cach hoc)) tap, nghien cuu mon hoc nganh cong coc ha hoi va gian dan.
• Adding a wildcard symbol may retrieve word variants: su ((sach hoc) or (cach hoc)) tap, nghien cuu mon hoc nganh cong coc ha hoi va gian dan*.