Perhaps you should try some spelling variations:
dang xay » dang van, van xay
dua tren » dung tren
cuu tre » cua tre, cau tren, cau treo
dan vai » dan va, dan tai, dan vat
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
hieu va » lieu va, hieu qua
cao duc » dao duc, cao suc, tao duoc
tu sac » tu sach, tu cac, tu san
va dan » ca dan, va dao, va dau
sac ky » cac ky, sai ky

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 xay hoi. hieu va ((cao duc) or (giao duc)) va dan vai ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky dang xay hoi. hieu va ((cao duc) OR (giao duc)) va dan vai ((dua tren) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky dang xay hoi. hieu va ((cao duc) or (giao duc)) va dan vai ((dua tren) or (cuu tre))*.