Perhaps you should try some spelling variations:
thanh dat » thanh san, thanh hai, thanh ha
thanh van » thanh san, thanh toan, thanh phan
ky dang » ky nang, ky danh
dang ma » dang mau, dang mam, dang mat
hieu va » lieu va, hieu qua
va pham » van pham, va phat, va phap
duc ban » duc tan, duc van, dua ban
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa

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 dang ma hoi. hieu va pham duc ban ((thanh dat) or (thanh van)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky dang ma hoi. hieu va pham duc ban ((thanh dat) OR (thanh van)) cua tre.
• Adding a wildcard symbol may retrieve word variants: su sac ky dang ma hoi. hieu va pham duc ban ((thanh dat) or (thanh van)) cua tre*.