Perhaps you should try some spelling variations:
sang tai » hang tai, sang tao, tang tai
hieu va » lieu va, hieu qua
ky sang » ky nang, ky dang, ky tang
tai hai » thi hai, dai hai, tai ha
hieu ve » hieu van
xuc va » duc va, luc va, xac va
vi cua » vai cua, di cua
tuc va » thuc va, truc va, tuc xa
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
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 sang tai hai. ((hieu ve) or (hieu va)) cam ((xuc va) OR (tuc va)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky sang tai hai. ((hieu ve) OR (hieu va)) cam ((xuc va) OR (tuc va)) hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky sang tai hai. ((hieu ve) or (hieu va)) cam ((xuc va) OR (tuc va)) hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu sac ky sang tai hai. ((hieu ve) or (hieu va)) cam ((xuc va) OR (tuc va)) hanh vi cua te*.