Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep vua, nghe cua
nghiep cua » nghiep vua, nghiep luan, nghien cuu
hoc nganh » hoc nhanh
nganh hoa » thanh hoa, khanh hoa, danh hoa
thu sach » tu sach, thuat sach, thuoc sach
sach hoc » cach hoc, sach hoi, mach hoc
phat tan » pha tan, nhat tan, pham tan
dan hoc » van hoc, dan toc, dai hoc
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: thu sach hoc tap, ((nghien cua) OR (nghiep cua)) dan hoc nganh hoa hoc xa hoi va phat tan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach hoc tap, ((nghien cua) OR (nghiep cua)) dan hoc nganh hoa hoc xa hoi va phat tan".
• Adding a wildcard symbol may retrieve word variants: thu sach hoc tap, ((nghien cua) OR (nghiep cua)) dan hoc nganh hoa hoc xa hoi va phat tan*.