Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh vai » hanh vi, hanh va, hanh tai
ban hanh » ban hang
vai cua » dai cua, hai cua, lai cua
cuu ban » cuu van, cua ban, cuu san
hau cuu » hau cua, cham cuu, khao cuu
van hau » van ha, van hai, van dau
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
dang xa » dang xay, dang ha, dang va
sac ky » cac ky, sai ky
tu sac » tu sach, tu cac, tu san

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) OR (lang xa))) or (van xay)) hoi. hieu van hau cuu ban hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((((dang xa) OR (lang xa))) OR (van xay)) hoi. hieu van hau cuu ban hanh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((((dang xa) OR (lang xa))) or (van xay)) hoi. hieu van hau cuu ban hanh vai cua tre*".