Perhaps you should try some spelling variations:
cham tuc » nham thuc, pham thuc, tham thuc
hanh tai » thanh tai, hang tai, han tai
tu triet » su triet, tu trien, cua triet
tu thiet » tu thien, thua thiet, cuu thiet
ky tang » ky nang, kho tang, ky trong
ky dang » ky nang, ky danh
hieu va » lieu va, hieu qua
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
ma hoi » mai hoi, xa hoi, ma hoa
tuc va » thuc va, truc va, tuc xa

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ((ky tang) OR (ky dang)) ma hoi. hieu va cham tuc va hanh tai ((tu triet) OR (tu thiet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ((ky tang) or (ky dang)) ma hoi. hieu va cham tuc va hanh tai ((tu triet) OR (tu thiet))~".
• Adding a wildcard symbol may retrieve word variants: tu cac ((ky tang) or (ky dang)) ma hoi. hieu va cham tuc va hanh tai ((tu triet) OR (tu thiet))*.