Perhaps you should try some spelling variations:
hieu caco » hieu cach, hieu ca, chieu cao
cua triet » cua viet, su triet, va triet
nhan luc » nang luc
hieu cac » hieu luc, hieu va, hieu van
sach tu » sach thu, sach ty, sach uu
lang xa » lang ha, dang xay, lang van
cach tu » cach thuc
luc va » duc va, tuc va, loc va
va dao » ca dao
dao vi » dao voi, dao ve, dao va
vi cua » vai cua, di 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 tu) or (cach tu)) lang xa hoi. ((hieu caco) or (hieu cac)) nhan luc va dao vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach tu) OR (cach tu)) lang xa hoi. ((hieu caco) OR (hieu cac)) nhan luc va dao vi cua triet.
• Adding a wildcard symbol may retrieve word variants: te ((sach tu) or (cach tu)) lang xa hoi. ((hieu caco) or (hieu cac)) nhan luc va dao vi cua triet*.