Perhaps you should try some spelling variations:
dien gian » dien giao, dien giai, kien giang
sach minh » sach danh, sac tinh, cach kinh
sanh minh » thanh minh, tranh minh, van minh
gia tuong » gia cuong, gian muong, gia tang
kinh dien » tinh dien, trinh dien
gia cong » cua cong, va cong
duc giao » duc gia, dung giao, nuoc giao
duc gian » duc gia, duy gian, duoc giao
so sanh » do sanh
so sach » bo sach, co sach, hoc sach
minh ai » minh hai, minh lai, minh tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( so sach kinh dien gian trong ) or ((( so sach minh ai ((gia tuong) OR (gia cong)) ) or ( so sanh minh ((duc gian) or (duc giao)) lang ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( so sach kinh dien gian trong ) OR ((( so sach minh ai ((gia tuong) OR (gia cong)) ) OR ( so sanh minh ((duc gian) OR (duc giao)) lang ))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( so sach kinh dien gian trong ) or ((( so sach minh ai ((gia tuong) OR (gia cong)) ) or ( so sanh minh ((duc gian) or (duc giao)) lang ))))*".