Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
duc ban » duc tan, dua ban, duc man
duc van » duc va, duc tan, duc manh
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
v pham » vi pham, d pham

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 dang xa hoi. hieu ((v pham) or (d phan)) ((duc ban) OR (duc van)) thanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky dang xa hoi. hieu ((v pham) OR (d phan)) ((duc ban) OR (duc van)) thanh hai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky dang xa hoi. hieu ((v pham) or (d phan)) ((duc ban) OR (duc van)) thanh hai cua tre".
• Adding a wildcard symbol may retrieve word variants: su sac ky dang xa hoi. hieu ((v pham) or (d phan)) ((duc ban) OR (duc van)) thanh hai cua tre*.