Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
nhanh khoa » nhan khoa, nganh khoa, hang khoa
cach thoi » cac thoi, cach thuc, cach noi
hoc nhanh » hoc nganh, hoc phan
thoi dai » hoc dai, hoi dap, hoi dan
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
van nhan » van phan, van thanh, danh nhan
nhan dan » phan dau, gian dan, nhan tai
tu cach » tu cac
ma hoi » mai hoi, ma hoa, me hoi

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