Perhaps you should try some spelling variations:
ky tang » ky dang, kho tang, ky trong
dai hoi » dai hoc, dai hai, dai moi
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ((ky tang) or (ky nang)) dai hoi. hieu ve cham ((xuc va) OR (tuc va)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ((ky tang) OR (ky nang)) dai hoi. hieu ve cham ((xuc va) OR (tuc va)) hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ((ky tang) or (ky nang)) dai hoi. hieu ve cham ((xuc va) OR (tuc va)) hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu cac ((ky tang) or (ky nang)) dai hoi. hieu ve cham ((xuc va) OR (tuc va)) hanh vi cua te*.