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
thoi tap » toi tap, hoc tap, thoi dai
cuu toan » cuu hoan, cua toan, huu toan
toan hoc » toan khoa, van hoc, hoa hoc
thuoc xa » thuoc ma, thuoc va, thuoc la
va nhan » van nhan, ca nhan, va phan
nhan va » nhan tai, nhan dan, nhan tao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) OR (tu cac)) thoi tap, nghien cuu toan hoc nganh cong thuoc xa hoi va nhan va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) OR (tu cac)) thoi tap, nghien cuu toan hoc nganh cong thuoc xa hoi va nhan va".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) OR (tu cac)) thoi tap, nghien cuu toan hoc nganh cong thuoc xa hoi va nhan va*.