Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
ban thanh » ban hanh, ban hang
tang van » dang van, hoang van, trong van
duc ban » duc tan, duc van, dua ban
cam duc » cam xuc, cao duc, pham duc
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
tang ma » mang may
ve cam » ve cham, ve cac, va cam
su xac » pu xac, su cac
su sac » su sach, su cac

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) OR (su xac)) ky ((tang ma) or (tang van)) hoi. hieu ve cam duc ban thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su xac)) ky ((tang ma) OR (tang van)) hoi. hieu ve cam duc ban thanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sac) OR (su xac)) ky ((tang ma) or (tang van)) hoi. hieu ve cam duc ban thanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sac) OR (su xac)) ky ((tang ma) or (tang van)) hoi. hieu ve cam duc ban thanh dai cua tre*.