Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
mai hoi » mai khoi, dai hoi, lai hoi
hieu va » lieu va, hieu qua
cac duc » cac du, cao duc, cac dac
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ma hoi » ma hoa, me hoi, va hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang ((((ma hoi) or (xa hoi))) or (mai hoi)). hieu va cac duc va thanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((((ma hoi) OR (xa hoi))) OR (mai hoi)). hieu va cac duc va thanh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((((ma hoi) or (xa hoi))) or (mai hoi)). hieu va cac duc va thanh hai cua tre*.