Perhaps you should try some spelling variations:
nganh chung » nhanh chuong, nganh cong, nhanh chong
cach thoi » cac thoi, cach thuc, cach noi
hoc nganh » hoc nhanh
chung hoc » trung hoc, dung hoc, hung hoa
thoi tap » toi tap, hoc tap, thoi dai
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
hoi danh » hop danh, hoi dan, hoc danh
nhan dan » phan dau, gian dan, nhan tai
tu cach » tu cac
nhan va » nhan tai, nhan tao, phan van
ma hoi » mai hoi, xa hoi, ma hoa

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