Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
sach ky » sac ky, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve nam » he nam, va nam, le nam
nam tu » nam thu, nam thuc
va dan » ca dan, va dau, va dap
va dao » ca dao

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 ky) OR (sach y)) nang xa hoi. hieu ve nam tu ((va dan) or (va dao)) va su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach y)) nang xa hoi. hieu ve nam tu ((va dan) OR (va dao)) va su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sach y)) nang xa hoi. hieu ve nam tu ((va dan) or (va dao)) va su triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sach y)) nang xa hoi. hieu ve nam tu ((va dan) or (va dao)) va su triet*.