Perhaps you should try some spelling variations:
chat cuu » chat huu, chat cua, cham cuu
ky tang » ky dang, kho tang, ky trong
lai hoi » dai hoi, lai hoa, lai roi
hieu su » hieu sau, hieu so, hieu suat
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
tieu su » thieu so
tu sac » tu sach, tu cac, tu san
va cua » va chua, via cua, ca cua
cuu va » cuu van, cuu ve
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 sac ((ky nang) or (ky tang)) lai hoi. ((hieu su) OR (tieu su)) chat cuu va hanh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((ky nang) OR (ky tang)) lai hoi. ((hieu su) OR (tieu su)) chat cuu va hanh va cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ((ky nang) or (ky tang)) lai hoi. ((hieu su) OR (tieu su)) chat cuu va hanh va cua te".
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky nang) or (ky tang)) lai hoi. ((hieu su) OR (tieu su)) chat cuu va hanh va cua te*.