Perhaps you should try some spelling variations:
nhanh chong » thanh cong, khanh phong
phong van » phung van, thong van, phong va
van phong » van dong, hai phong
chong hoc » chung hoc, chong doc, thong hoc
coc nhanh » hoc nhanh, doc nhanh, cach nhanh
sach hoi » sach moi, cach thoi, hoach hoi
cong coc » cong cuoc, cong cac, cong co
cuu cong » cua cong, thu cong, cac cong
sach doi » sach moi, sach dao, sach bai
hai van » thai van, ha van, hai tan
hoc xa » hoc ma
xa hai » xa thai, xua hai, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach hoi) or (sach doi)) dap, nghien cuu cong coc nhanh chong hoc xa hai van phong van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach hoi) OR (sach doi)) dap, nghien cuu cong coc nhanh chong hoc xa hai van phong van.
• Adding a wildcard symbol may retrieve word variants: tu ((sach hoi) or (sach doi)) dap, nghien cuu cong coc nhanh chong hoc xa hai van phong van*.