Perhaps you should try some spelling variations:
cach nhanh » cac nganh, cac nhan, cac thanh
sach ngan » sach ngon, sach nha, sach han
sach nhah » sach nha, sach tham, sach han
tu sach » thu sach, su sach, te sach
ngan a » ngan nam, nganh ma, ngan han
ly khi » ly chi
a chi » va chi, _ chi, y chi

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu sach ngan a chi đong luc ) or ( thuoc ((sach nhah) OR (cach nhanh)) ly khi đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach ngan a chi đong luc ) OR ( thuoc ((sach nhah) OR (cach nhanh)) ly khi đong luc )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tu sach ngan a chi đong luc ) or ( thuoc ((sach nhah) OR (cach nhanh)) ly khi đong luc ))".
• Adding a wildcard symbol may retrieve word variants: (( tu sach ngan a chi đong luc ) or ( thuoc ((sach nhah) OR (cach nhanh)) ly khi đong luc ))*.