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
tai phong » tai phuong, hai phong, giai phong
mach hoc » dich hoc, anh hoc, bac hoc
cach hoc » cach thuc, cach thoi, dich hoc
thuoc xa » thuoc ma, thuoc va, thuoc la
phong tu » phong tuc, thong tu, phong thuy
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
hoi tai » hoc tai, hoi trac

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((mach hoc) or (cach hoc)) tap, nghien cuu mot hoc nganh cong thuoc xa hoi tai phong tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((mach hoc) OR (cach hoc)) tap, nghien cuu mot hoc nganh cong thuoc xa hoi tai phong tu.
• Adding a wildcard symbol may retrieve word variants: tu ((mach hoc) or (cach hoc)) tap, nghien cuu mot hoc nganh cong thuoc xa hoi tai phong tu*.