Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh hai » thanh phan, thanh hoa, thanh san
ky dang » ky nang, ky danh
dang ma » dang mau, dang mam, dang mat
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
su cac » tu cac, su cao, su can
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cac ky dang ma hoa. hieu ((ve cam) or (ve cac)) cua ban thanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cac ky dang ma hoa. hieu ((ve cam) OR (ve cac)) cua ban thanh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: su cac ky dang ma hoa. hieu ((ve cam) or (ve cac)) cua ban thanh hai cua tre*.