Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
ban hanh » ban hang
cua tre » cua te, cuu tre, cua triet
duc ban » duc tan, duc van, dua ban
cam duc » cam xuc, cao duc, pham duc
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
lang xa » lang ha, dang xay, lang van
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 ((lang xa) or (tang ma)) hoi. hieu ve cam duc ban hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su xac)) ky ((lang xa) OR (tang ma)) hoi. hieu ve cam duc ban hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sac) or (su xac)) ky ((lang xa) or (tang ma)) hoi. hieu ve cam duc ban hanh dai cua tre*.