Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
cua tre » cua te, cua triet, dua tren
danh de » hanh de, dan de, dang de
va danh » va dinh, va dan, va hanh
cuu tre » cau tren, cau treo
hieu ve » hieu va, hieu van
van hoi » van hoa, van hoc, van hoe
ky dang » ky nang, ky danh
ky tang » ky nang, kho tang, ky trong
xuc va » duc va, tuc va, luc va
ve cam » ve cham, ve cac, va cam

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