Perhaps you should try some spelling variations:
su triet » su viet
ve triet » va trien
cham xuc » cam xuc, chat xuc, cham soc
ban hanh » ban hang
hieu va » lieu va, hieu qua
va cham » va chat, va tham
nang ma » tang ma, sang ma, nang cao
xuc ban » duc ban, cuc ban, quoc ban
sach va » sach xa, sach ha, sach dao
hanh ki » hanh vi, hanh ky, hanh kien
su tien » su kien, su hien, tu tieng
va nang » van nang, da nang, cam nang
tu sach » thu sach, su sach, te sach
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 nang ma hoi. hieu va cham xuc ban hanh ki ((su tien) or (((ve triet) OR (su triet))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach va nang ma hoi. hieu va cham xuc ban hanh ki ((su tien) OR (((ve triet) OR (su triet)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach va nang ma hoi. hieu va cham xuc ban hanh ki ((su tien) or (((ve triet) OR (su triet))))".
• Adding a wildcard symbol may retrieve word variants: tu sach va nang ma hoi. hieu va cham xuc ban hanh ki ((su tien) or (((ve triet) OR (su triet))))*.