Perhaps you should try some spelling variations:
sang lai » sang tai, sang lap, mang lai
hieu sau » hieu su, hieu suat, tieu su
ky sang » ky nang, ky dang, ky tang
lai hoi » dai hoi, lai hoa, lai roi
va hanh » van hanh, va thanh, va danh
tu san » thu san, tu ban, tu can
cao tu » cao thu, cao su, tao tu
vi cua » vai cua, di cua
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 san) or (tu cac)) ky sang lai hoi. hieu sau ((cao tu) OR (co tu)) va hanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu san) OR (tu cac)) ky sang lai hoi. hieu sau ((cao tu) OR (co tu)) va hanh vi cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu san) or (tu cac)) ky sang lai hoi. hieu sau ((cao tu) OR (co tu)) va hanh vi cua tu".
• Adding a wildcard symbol may retrieve word variants: ((tu san) or (tu cac)) ky sang lai hoi. hieu sau ((cao tu) OR (co tu)) va hanh vi cua tu*.