Perhaps you should try some spelling variations:
dang mai » dang hai, dang mau, dang bai
ky dang » ky nang, ky danh
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
dan hai » doan hai, dang hai, dan khai
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
tu ban » thu ban, te ban
ban ky » van ky, dan ky
tuc va » thuc va, truc va, duc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ban ky dang mai hoi. hieu ve cham ((tuc va) or (tuc xa)) dan hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ban ky dang mai hoi. hieu ve cham ((tuc va) OR (tuc xa)) dan hai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ban ky dang mai hoi. hieu ve cham ((tuc va) or (tuc xa)) dan hai cua tre*.