Perhaps you should try some spelling variations:
nganh chung » nhanh chuong, nganh cong, nhanh chong
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
cach thoi » cac thoi, cach thuc, cach noi
hoc nganh » hoc nhanh
chung hoc » trung hoc, dung hoc, hung hoa
thoi dai » hoc dai, hoi dap, hoi dan
cong hoc » dong hoc, cong hoa, cong coc
hoi danh » hop danh, hoi dan, hoc danh
nhan tao » nhan tai, nhan dan
tu cach » tu cac
nhan va » nhan tai, nhan dan, 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 dai, nghien thu cong hoc nganh chung hoc ma hoi danh ((nhan va) OR (nhan tao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cach thoi dai, nghien thu cong hoc nganh chung hoc ma hoi danh ((nhan va) OR (nhan tao))".
• Adding a wildcard symbol may retrieve word variants: tu cach thoi dai, nghien thu cong hoc nganh chung hoc ma hoi danh ((nhan va) OR (nhan tao))*.