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 coc » cong cuoc, cong cac, cong co
te sach » toc sach
cong ho » cong hoa, cong cho, cong hon
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 ho) OR (cong coc)) nganh chung hoc va do ban thanh toan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach hoc tap, nghien thu ((cong ho) 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 ho) OR (cong coc)) nganh chung hoc va do ban thanh toan*.