Perhaps you should try some spelling variations:
nganh cong » nhanh chong, thanh cong
cach thuc » anh thuc, cac thu
hoc nganh » hoc nhanh
sach hoc » cach hoc, sach hoi, mach 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 va » hoc va, co va, loc va
va hoi » xa hoi, va hoc, va 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 hoc) or (cach thuc)) tap, nghien cuu mon hoc nganh cong coc va hoi va gian dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach hoc) OR (cach thuc)) tap, nghien cuu mon hoc nganh cong coc va hoi va gian dan.
• Adding a wildcard symbol may retrieve word variants: su ((sach hoc) or (cach thuc)) tap, nghien cuu mon hoc nganh cong coc va hoi va gian dan*.