Perhaps you should try some spelling variations:
nganh khung » nganh khong, nhanh hung
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
hoc nganh » hoc nhanh
khung hoc » chung hoc, nhung hoc, thuong hoc
ban thanh » ban hanh, ban hang
thanh van » thanh san, thanh toan, thanh phan
sach hoc » cach hoc, sach hoi, mach hoc
cong hoc » dong hoc, cong hoa, cong coc
te sach » toc sach
xoa doi » hoa doi
va doi » va dai, va doc, va do

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach hoc tap, nghien thu cong hoc nganh khung hoc ((va doi) or (xoa doi)) ban thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach hoc tap, nghien thu cong hoc nganh khung hoc ((va doi) OR (xoa doi)) ban thanh van.
• Adding a wildcard symbol may retrieve word variants: te sach hoc tap, nghien thu cong hoc nganh khung hoc ((va doi) or (xoa doi)) ban thanh van*.