Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
khong hoc » khung hoc, thong hoc, khong thuoc
cach thoi » cac thoi, cach thuc, cach noi
hoc nganh » hoc nhanh
van nhan » van phan, van thanh, danh nhan
nhan dan » phan dau, gian dan, nhan tai
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
thoi dai » hoc dai, hoi dap, hoi dan
xa thai » ca thai, a thai, da thai
tu cach » tu cac
xa hai » xua hai, xa hoi, xa dai

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 cuu cong hoc nganh khong hoc ((xa hai) or (xa thai)) van nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach thoi dai, nghien cuu cong hoc nganh khong hoc ((xa hai) OR (xa thai)) van nhan dan.
• Adding a wildcard symbol may retrieve word variants: tu cach thoi dai, nghien cuu cong hoc nganh khong hoc ((xa hai) or (xa thai)) van nhan dan*.