Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
chat huu » pham huu
hien du » hien tu, hien dai, khien tu
ky mang » ky nang, ke mang, ky tang
ky dang » ky nang, ky danh
lai hoi » dai hoi, lai hoa, lai roi
vi cua » vai cua, di cua
tu dan » tuc dan, tu ban, cu dan
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu dan ((ky mang) OR (ky dang)) lai hoi. hien du ((chat huu) or (cam xuc)) van hanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu dan ((ky mang) OR (ky dang)) lai hoi. hien du ((chat huu) OR (cam xuc)) van hanh vi cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu dan ((ky mang) OR (ky dang)) lai hoi. hien du ((chat huu) or (cam xuc)) van hanh vi cua tu".
• Adding a wildcard symbol may retrieve word variants: tu dan ((ky mang) OR (ky dang)) lai hoi. hien du ((chat huu) or (cam xuc)) van hanh vi cua tu*.