Perhaps you should try some spelling variations:
cac cuoc » cac nuoc, ca cuoc, cac quoc
dinh thi » dinh tri
cuoc van » cuoi van, luoc van, quoc van
cua tre » cua te, cuu tre, cua triet
anh thi » anh tho, dang thi, anh thuc
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
nang o » nang co, nang ho, nang ro
tu can » tu ban, tu cac, thu canh
tu bat » tu ban, tu dat
o lai » o lao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu bat) OR (tu can)) ky nang o lai. hieu ve cac cuoc van ((anh thi) OR (dinh thi)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu bat) OR (tu can)) ky nang o lai. hieu ve cac cuoc van ((anh thi) OR (dinh thi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu bat) OR (tu can)) ky nang o lai. hieu ve cac cuoc van ((anh thi) OR (dinh thi)) cua tre*.