Perhaps you should try some spelling variations:
dinh kinh » hinh kinh, dich kinh, dinh tinh
hieu van » hieu va, thien van, lieu va
cau treo » cau theo, cau triet, cau trieu
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
van cam » van nam, van lam, van cau
cam duc » cam xuc, cao duc, pham duc
va dinh » van dinh, va kinh, va tinh
y nang » ky nang, ly nang, v nang
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 cam duc va dinh kinh ((cau treo) OR (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((x hoi) OR (x ho)). hieu van cam duc va dinh kinh ((cau treo) OR (cau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ((x hoi) or (x ho)). hieu van cam duc va dinh kinh ((cau treo) OR (cau tren))".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((x hoi) or (x ho)). hieu van cam duc va dinh kinh ((cau treo) OR (cau tren))*.