Perhaps you should try some spelling variations:
nganh cong » nhanh chong, thanh cong
cong thuoc » cong thuc, dong thuoc, long thuoc
hoc nganh » hoc nhanh
sanh hoi » sach hoi, hanh thoi, sinh hoc
thuoc ma » hoc ma, duoc ma
phan van » pham van, thanh van, luan van
nhan dan » phan dau, gian dan, nhan tai
so sanh » do sanh
hoi tap » hoi dap, hoc tap, hoi tai
hoi cac » hoc cac, voi cac, hoa cac
cuu co » huu co, cua co, cuu mo
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: so sanh hoi tap, nghien cuu co hoc nganh cong thuoc ma hoi cac ((phan van) or (nhan dan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh hoi tap, nghien cuu co hoc nganh cong thuoc ma hoi cac ((phan van) OR (nhan dan)).
• Adding a wildcard symbol may retrieve word variants: so sanh hoi tap, nghien cuu co hoc nganh cong thuoc ma hoi cac ((phan van) or (nhan dan))*.