Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
sach ky » sach y, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
va danh » va dan, va hanh, dia danh
va dinh » van dinh, va kinh, va tinh
sac ky » cac ky, sai ky
ve nam » he nam, va nam, le nam
nam tu » nam thu, nam thuc

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) or (sac ky)) nang xa hoi. hieu ve nam tu ((va danh) or (va dinh)) va su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sac ky)) nang xa hoi. hieu ve nam tu ((va danh) OR (va dinh)) va su triet.
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) or (sac ky)) nang xa hoi. hieu ve nam tu ((va danh) or (va dinh)) va su triet*.