Perhaps you should try some spelling variations:
thong khoa » tuong khoa, hong khoa, phong khoa
hoc nganh » hoc nhanh
thong hoc » thuong hoc, tuong hoc, thong hoa
van thanh » ban thanh, van tuan
thanh van » thanh san, thanh toan, thanh phan
sach hoc » cach hoc, sach hoi, mach hoc
thai van » thi van, thai vung, thai den
su sach » so sach, vu sach
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
ma thai » mai thai, mau thai, ca thai

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 tap, nghien cuu mon hoc nganh ((thong khoa) or (thong hoc)) ma thai van thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach hoc tap, nghien cuu mon hoc nganh ((thong khoa) OR (thong hoc)) ma thai van thanh van.
• Adding a wildcard symbol may retrieve word variants: su sach hoc tap, nghien cuu mon hoc nganh ((thong khoa) or (thong hoc)) ma thai van thanh van*.