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

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 mai hoi van ((nhan va) or (nhan tao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach thoi tap, nghien cuu cong hoc nganh chung hoc mai hoi van ((nhan va) OR (nhan tao)).
• Adding a wildcard symbol may retrieve word variants: tu cach thoi tap, nghien cuu cong hoc nganh chung hoc mai hoi van ((nhan va) or (nhan tao))*.