Perhaps you should try some spelling variations:
dang xay » dang van, van xay
tu cach » tu cac
minh vi » minh voi, dinh vi, minh va
xuc van » duc van, luc van, vuc van
hieu va » lieu va, hieu qua
hieu ve » hieu van
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (su sach)) ky dang xay hoi. ((hieu ve) OR (hieu va)) cam xuc van minh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) ky dang xay hoi. ((hieu ve) OR (hieu va)) cam xuc van minh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (su sach)) ky dang xay hoi. ((hieu ve) OR (hieu va)) cam xuc van minh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (su sach)) ky dang xay hoi. ((hieu ve) OR (hieu va)) cam xuc van minh vi cua tre*.