Perhaps you should try some spelling variations:
sang tai » hang tai, sang tao, tang tai
hieu sau » hieu suat, tieu su, hieu va
ky sang » ky nang, ky dang, ky tang
tai hoi » tai khoi, dai hoi, tai hai
hieu su » tieu su, hieu so, hieu suat
xuc va » tuc va, luc va, xac va
vi cua » vai cua, di cua
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 cac ky sang tai hoi. ((hieu su) OR (hieu sau)) chat ((xuc va) or (duc va)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky sang tai hoi. ((hieu su) OR (hieu sau)) chat ((xuc va) OR (duc va)) hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky sang tai hoi. ((hieu su) OR (hieu sau)) chat ((xuc va) or (duc va)) hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu cac ky sang tai hoi. ((hieu su) OR (hieu sau)) chat ((xuc va) or (duc va)) hanh vi cua te*.