Perhaps you should try some spelling variations:
khanh nganh » nhanh ngan, khanh thanh
nganh yng » nganh cong, nganh nong
vu khanh » vu thanh, van khanh, duy khanh
su sach » vu sach
so sach » so sanh, bo sach, co sach
yng khi » cong khi, bang khi, dong khi
y khi » ly khi, ky khi, my khi

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: (( vu khanh nganh y khi đong luc ) OR ( ((su sach) OR (so sach)) nganh yng khi đong luc ))~.
• Adding a wildcard symbol may retrieve word variants: (( vu khanh nganh y khi đong luc ) or ( ((su sach) or (so sach)) nganh yng khi đong luc ))*.