Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
va thanh » gia thanh, ban thanh, va tinh
ky dang » ky danh
cua tre » cua te, cuu tre, cua triet
te sac » te sach, te cac, te san
va cai » va cac, va bai, va dai
va dao » ca dao
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ((ky dang) OR (ky nang)) xa hoi. hieu ((va cai) or (va dao)) tuc va thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ((ky dang) OR (ky nang)) xa hoi. hieu ((va cai) OR (va dao)) tuc va thanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ((ky dang) OR (ky nang)) xa hoi. hieu ((va cai) or (va dao)) tuc va thanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sac ((ky dang) OR (ky nang)) xa hoi. hieu ((va cai) or (va dao)) tuc va thanh dai cua tre*.