Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh hai » thanh phan, thanh hoa, thanh san
kho tang » cao tang
ky tang » ky nang, ky dang, ky trong
hai cua » thai cua, dai cua, hoi cua
duc van » duc va, duc tan, duc manh
su sac » su sach, su cac, su xac
cua te » cua tu
dieu d » diem d, dieu _, dieu y
hieu d » hieu 2, hieu _, hieu y

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ((ky tang) or (kho tang)) xa hoi. ((hieu d) OR (dieu d)) pham duc van thanh hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ((ky tang) OR (kho tang)) xa hoi. ((hieu d) OR (dieu d)) pham duc van thanh hai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ((ky tang) or (kho tang)) xa hoi. ((hieu d) OR (dieu d)) pham duc van thanh hai cua te".
• Adding a wildcard symbol may retrieve word variants: su sac ((ky tang) or (kho tang)) xa hoi. ((hieu d) OR (dieu d)) pham duc van thanh hai cua te*.