Perhaps you should try some spelling variations:
sach nganh » sach ngan, sach tranh, cac nganh
sach tham » sach nha
nganh xay » nganh mac, nganh y, nganh ma
te sach » toc sach
tu sach » thu sach, su sach, tu cach
xay khi » nhay khi
tham y » tham my, tam y, thom y
y khi » ly khi, ky khi, my khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( te sach tham y khi đong luc ) or ( tu sach nganh xay khi đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach tham y khi đong luc ) OR ( tu sach nganh xay khi đong luc )).
• Adding a wildcard symbol may retrieve word variants: (( te sach tham y khi đong luc ) or ( tu sach nganh xay khi đong luc ))*.