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