Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
tai khoa » da khoa, noi khoa
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
va thanh » gia thanh, ban thanh, va tinh
hieu ve » hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
vu sai » vu hai, vu san, vu dai
sai ky » sac ky
ma hoi » mai hoi, xa hoi, me hoi
ve cac » va cac, vien cac

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

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