Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
khao hoat » cao hoat, khao ha, kha hoa
thanh ban » thanh san, thanh van, thanh bac
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu vu » hieu va, hieu ve, hieu su
ban cua » ban quan
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky dang xa hoi. hieu vu ((khao hoat) OR (khao sat)) van thanh ban cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky dang xa hoi. hieu vu ((khao hoat) OR (khao sat)) van thanh ban cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ky dang xa hoi. hieu vu ((khao hoat) OR (khao sat)) van thanh ban cua tre*.