Perhaps you should try some spelling variations:
hoc nhanh » hoc nganh, hoc phan
nhanh hoa » nhanh hoan, thanh hoa, khanh hoa
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
nhan tai » hang tai, van tai, toan tai
tu sach » thu sach, su sach, te sach
doi tap » doi tac, doi dap, doi tan
doi tai » hoi tai, dai tai, doi tac
va nhan » van nhan, ca nhan, va phan
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 sach ((doi tap) OR (doi tai)), nghien cuu cong hoc nhanh hoa hoc xa hoi va nhan tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((doi tap) OR (doi tai)), nghien cuu cong hoc nhanh hoa hoc xa hoi va nhan tai".
• Adding a wildcard symbol may retrieve word variants: tu sach ((doi tap) OR (doi tai)), nghien cuu cong hoc nhanh hoa hoc xa hoi va nhan tai*.