Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
khong thuoc » khang thuoc, hong phuoc, dong thuoc
hoc nganh » hoc nhanh
thuoc mai » thuoc ma, thuoc tai, thuoc moi
van gian » van giang, dan gian, van giao
thu anh » thuy anh, thu canh, thu oanh
anh hoc » sinh hoc, benh hoc, hinh hoc
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
mai hoi » mai khoi, dai hoi, lai hoi
va gian » va gianh, va giai, va gia

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu anh hoc tap, nghien cuu mot hoc nganh khong thuoc mai hoi ((va gian) or (van gian)) dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu anh hoc tap, nghien cuu mot hoc nganh khong thuoc mai hoi ((va gian) OR (van gian)) dan.
• Adding a wildcard symbol may retrieve word variants: thu anh hoc tap, nghien cuu mot hoc nganh khong thuoc mai hoi ((va gian) or (van gian)) dan*.