Perhaps you should try some spelling variations:
cach nhanh » cac nganh, cac nhan, cac thanh
nhanh li » nhanh vi, thanh loi, nhanh thi
toc sach » hoc sach, doc sach, thuoc sach
te cach » ve cach, tu cach, te cac
nhan ky » nhan y, nhat ky, than ky
li khi » ly khi
ky chi » ky thi, ly chi, ke chi

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( te cach nhanh li khi đong luc ) or ( ((te sach) OR (toc sach)) nhan ky chi đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te cach nhanh li khi đong luc ) OR ( ((te sach) OR (toc sach)) nhan ky chi đong luc ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( te cach nhanh li khi đong luc ) or ( ((te sach) OR (toc sach)) nhan ky chi đong luc ))*".