Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
te sach » toc sach
ky tang » ky nang, kho tang, ky trong
ky dang » ky nang, ky danh
van cam » van nam, van lam, van cau
xuc ban » cuc ban, quoc ban, xuat ban
duc ban » duc tan, duc van, dua ban
cuu tre » cua tre, cau tren, cau treo
vi cuu » vi luu, vinh cuu

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 ((ky tang) OR (ky dang)) xa hoi. hieu van cam ((xuc ban) or (duc ban)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky tang) OR (ky dang)) xa hoi. hieu van cam ((xuc ban) OR (duc ban)) hanh vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky tang) OR (ky dang)) xa hoi. hieu van cam ((xuc ban) or (duc ban)) hanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky tang) OR (ky dang)) xa hoi. hieu van cam ((xuc ban) or (duc ban)) hanh vi cuu tre*.