Perhaps you should try some spelling variations:
lang tai » lang thai, hang tai, tang tai
cua tre » cua te, cuu tre, cua triet
tai cua » thai cua, tai cuc, tri cua
va lang » va nang, hoa lang
va dao » ca dao
luc va » duc va, tuc va, loc va
tu bai » tu ban, te bai
nang o » nang co, nang ho, nang ro
tu bat » tu ban, tu dat
va cam » va cham, va cac, va cao
o hoc » co hoc, mo hoc, so hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu bai) OR (tu bat)) ky nang o hoc. hieu ((va cam) or (va dao)) luc va lang tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu bai) OR (tu bat)) ky nang o hoc. hieu ((va cam) OR (va dao)) luc va lang tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu bai) OR (tu bat)) ky nang o hoc. hieu ((va cam) or (va dao)) luc va lang tai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu bai) OR (tu bat)) ky nang o hoc. hieu ((va cam) or (va dao)) luc va lang tai cua tre*.