Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
nang dai » nang dau, nang tai, lang dai
tu sach » thu sach, te sach, tu cach
cau luc » cau truc, cau phuc
cam luc » cam xuc
hieu ve » hieu va, hieu van
dai hoi » dai hoc, dai hai, dai moi
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (su sach)) ky nang dai hoi. hieu ve ((cam luc) or (cau luc)) gia thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang dai hoi. hieu ve ((cam luc) OR (cau luc)) gia thanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky nang dai hoi. hieu ve ((cam luc) or (cau luc)) gia thanh dai cua tre*.