Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
ban thanh » ban hanh, ban hang
cao hoi » cau hoi, co hoi, cao hoc
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, nam duoc
cua tre » cua te, cuu tre, cua triet
te sac » te sach, te cac
te san » te ban, ke san, 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: ((te sac) OR (te san)) ky nang cao hoi. hieu ve ((cam duc) or (pham duc)) ban thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (te san)) ky nang cao hoi. hieu ve ((cam duc) OR (pham duc)) ban thanh dai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sac) OR (te san)) ky nang cao hoi. hieu ve ((cam duc) or (pham duc)) ban thanh dai cua tre*".