Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
vu sach » vu bach, su sach, vu khach
cam tuc » cam tu, nam thuc, dam thuc
dai huu » dao huu, dai hau, dai thua
va hanh » van hanh, va thanh, va danh
huu tre » huu tri, cuu tre, huu them
hieu ve » hieu va, hieu van
ky danh » ky anh
ky dang » ky nang

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