Perhaps you should try some spelling variations:
hieu tu » chieu tu, hieu tuc, hien tu
ky danh » ky anh, ky dang
dai hoi » dai hoc, dai moi
dinh vi » dinh ve, dinh viet, dinh tri
dai hai » dai han, dai tai, dai thao
tu phat » su phat, te phat, xu phat
vi cua » vai cua, di 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 tu phat ((xuc va) or (duc va)) dinh vi 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 tu phat ((xuc va) OR (duc va)) dinh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: tu sai ky danh ((dai hoi) or (dai hai)). hieu tu phat ((xuc va) or (duc va)) dinh vi cua tu*.