Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
goc nhanh » hoc nhanh, doc nhanh, ngoc khanh
chung hoc » trung hoc, dung hoc, hung hoa
hoc sach » hoc sinh, hoc cac, hoc anh
sach doi » sach hoi, sach moi, sach dao
goc nhan » ngoc nhan, goc nhin, hoc nhan
doi dap » hoi dap, doi dau, do dap
va luan » vay luan, van luan, va quan
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: hoc sach doi dap, nghien cua mot ((goc nhanh) or (goc nhan)) chung hoc xa hoi va luan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach doi dap, nghien cua mot ((goc nhanh) OR (goc nhan)) chung hoc xa hoi va luan van.
• Adding a wildcard symbol may retrieve word variants: hoc sach doi dap, nghien cua mot ((goc nhanh) or (goc nhan)) chung hoc xa hoi va luan van*.