Perhaps you should try some spelling variations:
nang dai » nang dau, nang tai, lang dai
hieu sau » hieu su, hieu suat, tieu su
sau phat » su phat, dau phat, sau phau
phat xuc » chat xuc, phat xuat, phap xu
va hanh » van hanh, va thanh, ban hanh
dai hoi » dai hoc, dai hai, dai moi
va danh » va dinh, va dan, dia danh
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan 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 nang dai hoi. hieu sau phat xuc ((va danh) OR (va hanh)) vi ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky nang dai hoi. hieu sau phat xuc ((va danh) OR (va hanh)) vi ((cua te) OR (cua tu))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky nang dai hoi. hieu sau phat xuc ((va danh) OR (va hanh)) vi ((cua te) or (cua tu))*".