Perhaps you should try some spelling variations:
khanh dinh » khanh linh, khanh vinh, hanh dinh
va khanh » van khanh, va thanh, vu khanh
cam hoa » cau hoa, chat hoa, pham hoa
dinh cu » dinh cuu, dinh chuc, dinh chau
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu ve » hieu va, hieu van
cao hoc » co hoc, cho hoc, chat hoc
tu san » thu san, tu can, vu san
tu ban » thu ban, te ban
cu tre » cu tren, cua tre, cuu tre

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu san) OR (tu ban)) ky dang xa hoi. hieu ve ((cam hoa) or (cao hoc)) va khanh dinh cu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu san) OR (tu ban)) ky dang xa hoi. hieu ve ((cam hoa) OR (cao hoc)) va khanh dinh cu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu san) OR (tu ban)) ky dang xa hoi. hieu ve ((cam hoa) or (cao hoc)) va khanh dinh cu tre".
• Adding a wildcard symbol may retrieve word variants: ((tu san) OR (tu ban)) ky dang xa hoi. hieu ve ((cam hoa) or (cao hoc)) va khanh dinh cu tre*.