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
mach hoc » cach hoc, dich hoc, anh hoc
thuoc va » thuc va, thuoc ma, thuong va
van nhan » van phan, van thanh, danh nhan
so mach » so sach, tao mach, kon mach
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
va nhan » ca nhan, va phan, va nha
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: so mach hoc tap, nghien cuu mon hoc nganh cong thuoc va hoi ((va nhan) OR (van nhan)) van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so mach hoc tap, nghien cuu mon hoc nganh cong thuoc va hoi ((va nhan) OR (van nhan)) van".
• Adding a wildcard symbol may retrieve word variants: so mach hoc tap, nghien cuu mon hoc nganh cong thuoc va hoi ((va nhan) OR (van nhan)) van*.