Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
ban hanh » ban hang
hieu ve » hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
cuc ban » cua ban, cac ban, cuu ban
cam cuc » cam xuc, cham cuu, pham cuc
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam
ha hoi » hoa hoi, xa hoi, va hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sac ky) or (sach y)) lang ((ha hoi) OR (ha noi)). hieu ve cam cuc ban hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sac ky) OR (sach y)) lang ((ha hoi) OR (ha noi)). hieu ve cam cuc ban hanh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sac ky) or (sach y)) lang ((ha hoi) OR (ha noi)). hieu ve cam cuc ban hanh vai cua tre*".