Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
cach nhanh » cac nganh, cac nhan, cac thanh
chuong hoc » chung hoc, thuong hoc, truong hoc
coc nhanh » hoc nhanh, doc nhanh, cuoc thanh
cach thoi » cac thoi, cach thuc, cach noi
thoi tap » toi tap, hoc tap, thoi dai
cac cong » cua cong
van nhan » van phan, van thanh, danh nhan
tu cach » tu cac
hai van » thai van, ha van, hai tan
nhan va » nhan tai, nhan dan, nhan tao
ma hai » ta hai, va hai, xa hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cach thoi tap, nghien cac cong ((coc nhanh) OR (cach nhanh)) chuong hoc ma hai van nhan va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cach thoi tap, nghien cac cong ((coc nhanh) OR (cach nhanh)) chuong hoc ma hai van nhan va*".