Perhaps you should try some spelling variations:
ve triet » va trien, su triet
sach ty » sach y, sach tu, sach thu
sach ky » sac ky, sach y, sach kem
hanh va » hang va, hanh vi
hieu ve » hieu va, hieu van
ve bao » te bao, va bao
bo van » so van, do van, ho van
x hoi » xa hoi, o hoi, x ho
va ve » va de, va le, va vi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach ky) or (sach ty)) nang x hoi. hieu ve bao ((bo van) or (vo van)) hanh va ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sach ty)) nang x hoi. hieu ve bao ((bo van) OR (vo van)) hanh va ve triet.
• Adding a wildcard symbol may retrieve word variants: thu ((sach ky) or (sach ty)) nang x hoi. hieu ve bao ((bo van) or (vo van)) hanh va ve triet*.