Perhaps you should try some spelling variations:
hoc nhanh » hoc phan
tuan pham » thanh pham, san pham, tac pham
sach hoc » cach hoc, sach hoi, mach hoc
cuu dong » cuu cong, cuu tong, cuu long
khoa hoc » hoa hoc
hai tuan » khai tuan, hai quan, hai tan
tu sach » thu sach, su sach, te sach
hoc xa » hoc ma
xa hai » xa thai, xua hai, xa 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 sach hoc tap, nghien cuu dong ((hoc nhanh) OR (hoc nganh)) khoa hoc xa hai tuan pham van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoc tap, nghien cuu dong ((hoc nhanh) OR (hoc nganh)) khoa hoc xa hai tuan pham van".
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien cuu dong ((hoc nhanh) OR (hoc nganh)) khoa hoc xa hai tuan pham van*.