Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
kho tang » cao tang
ky tang » ky nang, ky dang, ky trong
duc van » duc va, duc manh, duc phan
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su cac, su xac
ma hoi » mai hoi, xa hoi, ma hoa
hieu v » hieu va, hieu ve, hieu 2
v pham » vi pham, d pham

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ((ky tang) or (kho tang)) ma hoi. hieu v pham ((duc tan) or (duc van)) thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ((ky tang) OR (kho tang)) ma hoi. hieu v pham ((duc tan) OR (duc van)) thanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sac ((ky tang) or (kho tang)) ma hoi. hieu v pham ((duc tan) or (duc van)) thanh dai cua tre*.