Perhaps you should try some spelling variations:
sach phan » sach han, mach phan, sach phat
sach danh » sach tranh, sach dao, sach dung
phan hong » phan cong, pham hong, phan song
cao khai » cao chat, co khi, cao thi
hong thi » hoang thi, hong thai, huong thi
vu sach » vu bach, su sach, vu khach
cao tai » cao tang
so sach » so sanh, bo sach, co sach

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( vu sach danh ((cao khai) OR (cao tai)) đong luc ) or ( so sach phan hong thi đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( vu sach danh ((cao khai) OR (cao tai)) đong luc ) OR ( so sach phan hong thi đong luc ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( vu sach danh ((cao khai) OR (cao tai)) đong luc ) or ( so sach phan hong thi đong luc ))*".