Perhaps you should try some spelling variations:
kho tang » cao tang
hieu van » hieu va, thien van, lieu va
te sach » toc sach
ky tang » ky nang, ky trong, tay tang
ky dang » ky nang, ky danh
nam xua » nam cua, nam mua, nam qua
va dinh » van dinh, va kinh, va tinh
van cuu » van cau, van chu, van cu
cuu tre » cua tre, cau tren, cau treo
xua va » xuat va, vua va, sua va

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