Perhaps you should try some spelling variations:
nganh nhung » doanh nhung, nganh nong, anh nhung
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
thanh phan » thanh pho, thanh san, thanh toan
hoc nganh » hoc nhanh
nhung hoc » chung hoc, nhung goc, khung hoc
ban thanh » ban hanh, ban hang
sach hoc » cach hoc, sach hoi, mach hoc
cong hoc » dong hoc, cong hoa, cong coc
te sach » toc sach
xoa doi » hoa doi

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 nhung hoc ((va doc) or (xoa doi)) ban thanh phan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach hoc tap, nghien thu cong hoc nganh nhung hoc ((va doc) OR (xoa doi)) ban thanh phan.
• Adding a wildcard symbol may retrieve word variants: te sach hoc tap, nghien thu cong hoc nganh nhung hoc ((va doc) or (xoa doi)) ban thanh phan*.