Perhaps you should try some spelling variations:
kho tang » cao tang
hieu van » hieu va, thien van, lieu va
vu sach » vu bach, su sach, vu khach
cam luc » cam xuc, cau luc
ky tang » ky nang, ky dang, ky trong
dinh de » dinh ve, dinh du, dinh le
van hoi » van hoa, van hoc, van hoe
hieu ve » hieu va
va dinh » van dinh, va kinh, va tinh
de cua » le cua, te cua, dieu cua
cua su » qua su
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ((ky tang) OR (kho tang)) van hoi. ((hieu ve) or (hieu van)) cam luc va dinh de cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((ky tang) OR (kho tang)) van hoi. ((hieu ve) OR (hieu van)) cam luc va dinh de cua su.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((ky tang) OR (kho tang)) van hoi. ((hieu ve) or (hieu van)) cam luc va dinh de cua su".
• Adding a wildcard symbol may retrieve word variants: vu sach ((ky tang) OR (kho tang)) van hoi. ((hieu ve) or (hieu van)) cam luc va dinh de cua su*.