Perhaps you should try some spelling variations:
va thanh » ban thanh, va tinh, le thanh
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, me hoi
ve dat » de dat, va dat, ve dao
vi cua » vai cua, di cua
nuoc » quoc, duoc, ngoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ky nang ((ma hoi) or (ma hoa)). hieu ve dat nuoc ((va thanh) or (gia thanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky nang ((ma hoi) OR (ma hoa)). hieu ve dat nuoc ((va thanh) OR (gia thanh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: vu sac ky nang ((ma hoi) or (ma hoa)). hieu ve dat nuoc ((va thanh) or (gia thanh)) vi cua tre*.