Perhaps you should try some spelling variations:
nganh chung » nhanh chuong, nganh cong, nhanh chong
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
hoc nganh » hoc nhanh
chung hoc » trung hoc, dung hoc, hung hoa
cach hoi » cach thoi, cach noi, cach hoc
cong hoc » dong hoc, cong hoa, cong coc
hoa danh » hoa doanh, hoa dan, hop danh
nhan dan » phan dau, gian dan, nhan tai
tu cach » tu cac
nhan va » nhan tai, nhan tao, phan van

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 hoi dap, nghien thu cong hoc nganh chung hoc ma hoa danh ((nhan va) OR (nhan dan))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cach hoi dap, nghien thu cong hoc nganh chung hoc ma hoa danh ((nhan va) OR (nhan dan))".
• Adding a wildcard symbol may retrieve word variants: tu cach hoi dap, nghien thu cong hoc nganh chung hoc ma hoa danh ((nhan va) OR (nhan dan))*.