Perhaps you should try some spelling variations:
sach ngan » sach ngon, sach nha, sach han
sach ngoc » sach ngon, sach nuoc, bich ngoc
doc sach » hoc sach, toc sach, nuoc sach
su sach » so sach, vu sach
ngan my » nhan my, nganh ma, nganh ky
ngoc ly » ngoc lan
my khi » ky khi, my chi
ly khi » ly chi

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( su sach ngan my khi đong luc ) or ( doc sach ngoc ly khi đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach ngan my khi đong luc ) OR ( doc sach ngoc ly khi đong luc )).
• Adding a wildcard symbol may retrieve word variants: (( su sach ngan my khi đong luc ) or ( doc sach ngoc ly khi đong luc ))*.