Perhaps you should try some spelling variations:
hanh lap » thanh lap, hanh lam, hanh cap
ban hanh » ban hang
nam duoc » nam thuoc, da duoc, dat duoc
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
sach ly » sach lo, sach ty, sach hay
cao duc » dao duc, cao suc, giao duc
lap cua » lai cua, tap cua, lam cua
cua tu » cua tuc, cua su, cua cu

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 ly) or (sach y)) nang xa hoi. hieu ve ((nam duoc) or (cao duc)) ban hanh lap cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ly) OR (sach y)) nang xa hoi. hieu ve ((nam duoc) OR (cao duc)) ban hanh lap cua tu.
• Adding a wildcard symbol may retrieve word variants: thu ((sach ly) or (sach y)) nang xa hoi. hieu ve ((nam duoc) or (cao duc)) ban hanh lap cua tu*.