Perhaps you should try some spelling variations:
chieu toc » chieu tro, chieu tu, hieu tuc
hieu hoc » lieu hoc, hieu hoa, tieu hoc
thai luc » thai tuc, than luc, thai luan
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
di cua » dai cua, doi cua, de cua
tu cao » cu cao, tu cac, vu cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cao ky lang xa hoi. ((chieu toc) OR (hieu hoc)) thai luc ((va hanh) or (gia dinh)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cao ky lang xa hoi. ((chieu toc) OR (hieu hoc)) thai luc ((va hanh) OR (gia dinh)) di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cao ky lang xa hoi. ((chieu toc) OR (hieu hoc)) thai luc ((va hanh) or (gia dinh)) di cua tre".
• Adding a wildcard symbol may retrieve word variants: tu cao ky lang xa hoi. ((chieu toc) OR (hieu hoc)) thai luc ((va hanh) or (gia dinh)) di cua tre*.