Perhaps you should try some spelling variations:
hieu sau » hieu su, hieu suat, tieu su
phat xuc » chat xuc, phat xuat, phap xu
nang dai » nang dau, nang tai, lang dai
sau phat » su phat, dau phat, sau phau
sang ky » sang kyo, dang ky, tang ky
dai hoi » dai hoc, dai hai, dai moi
va hanh » van hanh, va thanh, va danh
xuc va » duc va, tuc va, luc va
san ky » van ky, dan ky, ban ky
cua tu » cua tuc, cua su, cua cu

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 ky) OR (sang ky)) nang dai hoi. hieu sau phat xuc va hanh vi ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((san ky) OR (sang ky)) nang dai hoi. hieu sau phat xuc va hanh vi ((cua te) OR (cua tu))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((san ky) OR (sang ky)) nang dai hoi. hieu sau phat xuc va hanh vi ((cua te) or (cua tu))*".