Perhaps you should try some spelling variations:
cach thoi » cac thoi, cach thuc, cach noi
hoc thanh » hoc nhanh, hoan thanh, hoc phan
thoi dap » hoi dap, thoi dai, thi dap
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
cong hoc » cong hoa, cong coc, cong ho
nhan van » nhan dan, nhan va, phan van
phan dau » phan tu, hang dau
tu cach » tu cac
hoi dan » hoa dan, hoc dan, hoi dap
hoc xa » hoc ma

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 dap, nghien cuu dong hoc thanh cong hoc xa hoi dan ((nhan van) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach thoi dap, nghien cuu dong hoc thanh cong hoc xa hoi dan ((nhan van) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: tu cach thoi dap, nghien cuu dong hoc thanh cong hoc xa hoi dan ((nhan van) or (phan dau))*.