Perhaps you should try some spelling variations:
ban hang » ngan hang
cua tre » cua te, cuu tre, cua triet
hang vi » hang va, hanh vi, hang di
xuc ban » duc ban, cuc ban, quoc ban
va cham » va chat, va tham
ve chat » va chat, van chat
nang ma » tang ma, sang ma, nang cao
sac ky » cac ky
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sac ky) or (sai ky)) nang ma hoi. hieu ((ve chat) or (va cham)) xuc ban hang vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (sai ky)) nang ma hoi. hieu ((ve chat) OR (va cham)) xuc ban hang vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) or (sai ky)) nang ma hoi. hieu ((ve chat) or (va cham)) xuc ban hang vi cua tre*.