Perhaps you should try some spelling variations:
sang lai » sang tai, sang lap, mang lai
chat duc » chat xuc, chat doc, chet duoc
va hanh » van hanh, va thanh, va danh
ky sang » ky nang, ky dang, ky tang
lai hoi » dai hoi, lai hoa, lai roi
hieu su » hieu sau, tieu su, hieu suat
hieu so » thieu so
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
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 sai ky sang lai hoi. ((hieu su) or (hieu so)) chat duc va hanh vi ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky sang lai hoi. ((hieu su) OR (hieu so)) chat duc va hanh vi ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky sang lai hoi. ((hieu su) or (hieu so)) chat duc va hanh vi ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: tu sai ky sang lai hoi. ((hieu su) or (hieu so)) chat duc va hanh vi ((cua te) OR (cua tu))*.