Perhaps you should try some spelling variations:
thai tuc » thai thuc, thai thuy, thai hoc
hieu van » hieu va, thien van, lieu va
thac toc » cac toc, thi toc
hanh vai » hanh vi, hanh va, hanh tai
thac cac » thoai cac, thanh cac, thuc cach
ban hanh » ban hang
cua tre » cua te, cuu tre, cua triet
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
vai cua » dai cua, hai cua, lai cua
su sac » su sach, su cac, su xac
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: su sac ky lang xa hoi. hieu van ((((thac toc) OR (thac cac))) or (thai tuc)) ban hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky lang xa hoi. hieu van ((((thac toc) OR (thac cac))) OR (thai tuc)) ban hanh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky lang xa hoi. hieu van ((((thac toc) OR (thac cac))) or (thai tuc)) ban hanh vai cua tre*".