Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cham xuc » cam xuc, chat xuc, cham soc
su viet » so viet
va dinh » van dinh, va kinh, va tinh
va cham » va chat, va tham
hieu va » lieu va, hieu qua
ky dang » ky nang, ky danh
ky tang » ky nang, kho tang, ky trong
ma hoi » mai hoi, xa hoi, ma hoa
so sac » so sach, so dac

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sac ((ky tang) OR (ky dang)) ma hoi. hieu va cham xuc ((van hanh) or (va dinh)) va su viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sac ((ky tang) OR (ky dang)) ma hoi. hieu va cham xuc ((van hanh) OR (va dinh)) va su viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sac ((ky tang) OR (ky dang)) ma hoi. hieu va cham xuc ((van hanh) or (va dinh)) va su viet".
• Adding a wildcard symbol may retrieve word variants: so sac ((ky tang) OR (ky dang)) ma hoi. hieu va cham xuc ((van hanh) or (va dinh)) va su viet*.