Perhaps you should try some spelling variations:
hanh hai » thanh hai, nhanh hai, hang hai
ky dang » ky nang
ky danh » ky anh
xay hoi » xa hoi, tay hoi, cay phoi
hieu va » lieu va, hieu qua
cac loc » cac lop, cac toc, cac hoc
va hanh » van hanh, va thanh, va danh
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu san
loc va » hoc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ((ky dang) or (ky danh)) xay hoi. hieu va cac loc va hanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((ky dang) OR (ky danh)) xay hoi. hieu va cac loc va hanh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky dang) or (ky danh)) xay hoi. hieu va cac loc va hanh hai cua tre*.