Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hieu van » hieu va, thien van, lieu va
va triet » va thiet, va trien, cua triet
hanh lam » thanh lap, hanh kem, hanh va
tan hanh » tan thanh, tang hanh, toan hanh
cham duc » pham duc, cham soc, pham duy
van cham » van chat, van tham, va cham
sach thu » sach thue, sach thieu, sach tham
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, xach tay

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 ty) or (sach thu)) nang xa hoi. hieu van cham duc tan hanh lam ((va triet) OR (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach thu)) nang xa hoi. hieu van cham duc tan hanh lam ((va triet) OR (ve triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) or (sach thu)) nang xa hoi. hieu van cham duc tan hanh lam ((va triet) OR (ve triet))".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach thu)) nang xa hoi. hieu van cham duc tan hanh lam ((va triet) OR (ve triet))*.