Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van dinh » van minh, van dich, va dinh
kinh cau » sinh cau, kinh can, minh cau
cau treo » cau theo, cau tren, cau triet
te sach » toc sach
van cau » van dau, van hau, van chat
cau duc » cao duc, cau luc, chu duc
va kinh » va tinh, qua kinh
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 cau duc ((van dinh) or (va kinh)) kinh 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 duc ((van dinh) OR (va kinh)) kinh cau treo.
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((x hoi) or (x ho)). hieu van cau duc ((van dinh) or (va kinh)) kinh cau treo*.