Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
nganh cong » nhanh chong, thanh cong
thanh toan » thanh hoa, thanh san, tinh toan
hoc nganh » hoc nhanh
ban thanh » ban hanh, ban hang
cong hoc » dong hoc, cong hoa, cong coc
te sach » toc sach
hai tap » hai thap, bai tap, han tap
hoi tai » hoc tai, hoi trac
do ban » doi ban, co ban, do ben
ma do » mau do, may do, ma so

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