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