Perhaps you should try some spelling variations:
phat xuc » chat xuc, phat xuat, phap xu
nang dai » nang dau, nang tai, lang dai
hieu sau » hieu suat, hieu va, hieu van
dai hoi » dai hoc, dai hai, dai moi
hieu su » hieu so, hieu suat, hieu qua
danh di » danh du, xanh di, danh dien
tieu su » thieu so
va danh » va dinh, va dan, va hanh
tu sai » tu bai, tu san, tu cai
di cua » dai cua, doi cua, de cua
xuc va » duc va, tuc va, luc va
sai ky » sac ky
cua cu » cua chu, cua cau, cua su

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky nang dai hoi. ((((hieu su) or (tieu su))) or (hieu sau)) phat xuc va danh di cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang dai hoi. ((((hieu su) OR (tieu su))) OR (hieu sau)) phat xuc va danh di cua cu.
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang dai hoi. ((((hieu su) or (tieu su))) or (hieu sau)) phat xuc va danh di cua cu*.