Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
nganh hoa » thanh hoa, khanh hoa, danh hoa
dong luan » dung luan, tong luan, dong xuan
su sach » vu sach
so sach » so sanh, bo sach, co sach
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
ha dong » hoat dong, van dong
ma ha » ma hoa, mai ha, my ha

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) or (so sach)) hoc tap, nghien cuu mot hoc nganh hoa hoc ma ha dong luan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) hoc tap, nghien cuu mot hoc nganh hoa hoc ma ha dong luan van.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) hoc tap, nghien cuu mot hoc nganh hoa hoc ma ha dong luan van*.