Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
van thanh » ban thanh, van tuan
hieu van » hieu va, thien van, lieu va
chau phu » chau phi, chau au, chau tho
van chau » van chat, van cau, van hau
tai cua » thai cua, tai cuc, tri cua
phu van » phuc van, chu van, phu san
tu sach » thu sach, su sach, te sach
mai hoi » mai khoi, dai hoi, lai hoi
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ma hoi » xa hoi, 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: tu sach y nang ((((ma hoi) OR (ma hoa))) or (mai hoi)). hieu van chau phu van thanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ((((ma hoi) OR (ma hoa))) OR (mai hoi)). hieu van chau phu van thanh tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang ((((ma hoi) OR (ma hoa))) or (mai hoi)). hieu van chau phu van thanh tai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ((((ma hoi) OR (ma hoa))) or (mai hoi)). hieu van chau phu van thanh tai cua tre*.