Perhaps you should try some spelling variations:
cham luc » nhan luc, cham cuu, chat lua
su triet » su tien, ve triet
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
hanh ki » hanh vi, hanh ky, hanh kien
su viet » so viet
sach va » sach xa, sach ha, sach dao
hieu va » lieu va, hieu qua
sang ma » tang ma, nang ma, sang tao
va sang » van sang, vua sang, va nang
ma hoi » mai hoi, xa hoi, ma hoa

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 va sang ma hoi. hieu va ((cham luc) OR (cham soc)) ban hanh ki ((su triet) or (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach va sang ma hoi. hieu va ((cham luc) OR (cham soc)) ban hanh ki ((su triet) OR (su viet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach va sang ma hoi. hieu va ((cham luc) OR (cham soc)) ban hanh ki ((su triet) or (su viet))*".