Perhaps you should try some spelling variations:
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
ky sang » ky nang, ky dang, duy sang
ky tang » ky nang, ky dang, kho tang
lai hoi » dai hoi, lai hoa, lai roi
cam duc » cam xuc, cao duc, pham duc
de cua » le cua, te cua, dieu cua
di cua » dai cua, doi cua, do cua
tu sac » tu sach, tu cac, tu san
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ((ky sang) or (ky tang)) lai hoi. hieu va cam duc va hanh ((di cua) OR (de cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((ky sang) OR (ky tang)) lai hoi. hieu va cam duc va hanh ((di cua) OR (de cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ((ky sang) or (ky tang)) lai hoi. hieu va cam duc va hanh ((di cua) OR (de cua)) te".
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky sang) or (ky tang)) lai hoi. hieu va cam duc va hanh ((di cua) OR (de cua)) te*.