Perhaps you should try some spelling variations:
dinh dinh » binh dinh, hinh dinh, dinh kinh
hieu van » hieu va, thien van, lieu va
dinh cau » dinh chau, dinh cuu, dinh cu
cau treo » cau theo, cau tren, cau triet
te sach » toc sach
van cau » van dau, van hau, van chat
y nang » ky nang, ly nang, v nang
xuc va » tuc va, luc va, xac va
x hoi » xa hoi, o hoi, 5 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 ((x hoi) or (x ho)). hieu van cau ((xuc va) OR (duc va)) dinh dinh cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((x hoi) OR (x ho)). hieu van cau ((xuc va) OR (duc va)) dinh dinh cau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ((x hoi) or (x ho)). hieu van cau ((xuc va) OR (duc va)) dinh dinh cau treo".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((x hoi) or (x ho)). hieu van cau ((xuc va) OR (duc va)) dinh dinh cau treo*.