Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
hoan thanh » hoang thanh, ban thanh, van thanh
hoa nhanh » hoc nhanh, hoa thanh, hoa khanh
thong hoc » thuong hoc, tuong hoc, thong hoa
danh gian » dan gian, danh gia, danh giao
cac cong » cua cong
hoi danh » hop danh, hoi dan, hoc danh
gian dan » gian lang
cac toi » cac thoi
toi tap » toi gap, toan tap, tong tap
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 cac toi tap, nghien cac cong ((hoa nhanh) or (hoan thanh)) thong hoc xa hoi danh gian dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac toi tap, nghien cac cong ((hoa nhanh) OR (hoan thanh)) thong hoc xa hoi danh gian dan.
• Adding a wildcard symbol may retrieve word variants: tu cac toi tap, nghien cac cong ((hoa nhanh) or (hoan thanh)) thong hoc xa hoi danh gian dan*.