Perhaps you should try some spelling variations:
nganh chung » nhanh chuong, nganh cong, nhanh chong
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
thanh toan » thanh hoa, thanh san, tinh toan
chung hoc » trung hoc, dung hoc, hung hoa
ban thanh » ban hanh, ban hang
sach hoc » cach hoc, sach hoi, mach hoc
cong hoc » dong hoc, cong hoa, cong ho
cong coc » cong cuoc, cong cac, cong co
te sach » toc sach
do ban » doi ban, co ban, do ben
va do » va dao, va doc, va co

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