Perhaps you should try some spelling variations:
mach phan » cach pha, dich phan, sach phat
sach hanh » sach danh, sach han, sach tranh
phan cong » thanh cong
cong thai » cong hai, hong thai, cong thanh
sac hanh » sach danh, bac thanh, cac thanh
may khi » may thi, my khi, may khoa
su mach » su sach

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( su ((sach hanh) OR (sac hanh)) may khi đong luc ) OR ( su mach phan cong thai đong luc ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( su ((sach hanh) OR (sac hanh)) may khi đong luc ) or ( su mach phan cong thai đong luc ))~".
• Adding a wildcard symbol may retrieve word variants: (( su ((sach hanh) OR (sac hanh)) may khi đong luc ) or ( su mach phan cong thai đong luc ))*.