Perhaps you should try some spelling variations:
sang dai » sang tai, lang dai, sang mai
phat xuc » chat xuc, phat xuat, phap xu
dai hoi » dai hoc, dai hai, dai moi
hieu su » hieu sau, tieu su, hieu so
su phat » su pham, tu phat, xu phat
va hanh » van hanh, va thanh, va danh
san ky » sang ky, van ky, ban ky
dan ky » van ky
xuc va » duc va, tuc va, luc 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: thu ((san ky) or (dan ky)) sang dai hoi. hieu su phat xuc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((san ky) OR (dan ky)) sang dai hoi. hieu su phat xuc va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: thu ((san ky) or (dan ky)) sang dai hoi. hieu su phat xuc va hanh vi cua te*.