Perhaps you should try some spelling variations:
hieu su » hieu sau, tieu su, hieu so
ky danh » ky anh, ky dang
dai hoi » dai hoc, dai moi
dinh di » dinh du, dinh vi, danh di
dai hai » dai han, dai tai, dai thao
su phat » su pham, tu phat, xu phat
di cua » dai cua, doi cua, de cua
tu sai » tu bai, tu san, tu cai
xuc va » tuc va, luc va, xac va
sai ky » sac 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 sai ky danh ((dai hoi) OR (dai hai)). hieu su phat ((xuc va) or (duc va)) dinh di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky danh ((dai hoi) OR (dai hai)). hieu su phat ((xuc va) OR (duc va)) dinh di cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky danh ((dai hoi) OR (dai hai)). hieu su phat ((xuc va) or (duc va)) dinh di cua tu".
• Adding a wildcard symbol may retrieve word variants: tu sai ky danh ((dai hoi) OR (dai hai)). hieu su phat ((xuc va) or (duc va)) dinh di cua tu*.