Perhaps you should try some spelling variations:
te sach » toc sach
sach ky » sac ky, sach y, sach ty
danh le » dinh le, manh le, anh le
va danh » va dinh, va dan, va hanh
huu duc » cuu duoc, huu dung
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
tang ma » tang van
cua tre » cua te, cuu tre, cua triet
ve huu » le huu, vu huu, va huu
le cua » ly cua

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 ky ((nang xa) or (((tang ma) OR (mang may)))) hoi. hieu ve huu duc va danh le cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang xa) OR (((tang ma) OR (mang may)))) hoi. hieu ve huu duc va danh le cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang xa) or (((tang ma) OR (mang may)))) hoi. hieu ve huu duc va danh le cua tre*".