Perhaps you should try some spelling variations:
thien van » thi van
hieu van » hieu va, lieu va, hieu ve
hanh vai » hanh va, hanh tai, hanh van
nang ho » nang hoc, nang co, tang ho
cam cuc » cam xuc, cham cuu, pham cuc
cuc ban » cua ban, cac ban, cuu ban
cua tre » cua te, cuu tre, cua triet
ho hoi » hoc hoi, hoa hoi, hoi hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang ho hoi. ((hieu van) OR (thien van)) cam cuc ban ((hanh vai) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang ho hoi. ((hieu van) OR (thien van)) cam cuc ban ((hanh vai) OR (hanh vi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang ho hoi. ((hieu van) OR (thien van)) cam cuc ban ((hanh vai) or (hanh vi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ho hoi. ((hieu van) OR (thien van)) cam cuc ban ((hanh vai) or (hanh vi)) cua tre*.