Perhaps you should try some spelling variations:
nganh dong » nganh cong, nhanh dong, nganh nong
dong thuoc » dung thuoc, dang thuoc, don thuoc
thich hoc » thich hop, hinh hoc, tinh hoc
hoc nganh » hoc nhanh
cuu toan » cuu hoan, cua toan, huu toan
toan hoc » toan khoa, van hoc, hoa hoc
thuoc ma » hoc ma, duoc ma
nhan dan » phan dau, nhan tai
gian dan » gian lang
hoc cac » hoc cao
ma hoc » va hoc, ma hoa, mo hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: chu thich hoc tap, nghien cuu toan hoc nganh dong thuoc ma hoc cac ((nhan dan) or (gian dan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chu thich hoc tap, nghien cuu toan hoc nganh dong thuoc ma hoc cac ((nhan dan) OR (gian dan)).
• Adding a wildcard symbol may retrieve word variants: chu thich hoc tap, nghien cuu toan hoc nganh dong thuoc ma hoc cac ((nhan dan) or (gian dan))*.