Perhaps you should try some spelling variations:
hieu vu » hieu va, hieu ve, hieu su
ke mang » ke trang
ke nang » ky nang, ki nang, kha nang
dai hoi » dai hoc, dai hai, dai moi
vu chat » va chat, ve chat, du chat
vi cua » vai cua, di cua
tuc va » thuc va, truc va, tuc xa
tu san » thu san, tu ban, tu can
xuc va » duc va, luc va, xac va
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 san ((ke mang) or (ke nang)) dai hoi. hieu vu chat ((xuc va) OR (tuc va)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ((ke mang) OR (ke nang)) dai hoi. hieu vu chat ((xuc va) OR (tuc va)) hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ((ke mang) or (ke nang)) dai hoi. hieu vu chat ((xuc va) OR (tuc va)) hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu san ((ke mang) or (ke nang)) dai hoi. hieu vu chat ((xuc va) OR (tuc va)) hanh vi cua te*.