Perhaps you should try some spelling variations:
khanh dinh » khanh linh, khanh vinh, hanh dinh
dinh cuu » dinh chi
va khanh » van khanh, va thanh, vu khanh
dang xay » dang van, van xay
cuu tre » cua tre, cau tren, cau treo
cao hoc » co hoc, cho hoc, chat hoc
cam hoc » am hoc, cam hoa, cac hoc
hieu ve » hieu va, hieu van
lang xa » lang ha, lang van
ban ky » van ky, dan ky
tu ban » thu ban, te ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ban ky ((lang xa) or (dang xay)) hoi. hieu ve ((cam hoc) or (cao hoc)) va khanh dinh cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ban ky ((lang xa) OR (dang xay)) hoi. hieu ve ((cam hoc) OR (cao hoc)) va khanh dinh cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu ban ky ((lang xa) or (dang xay)) hoi. hieu ve ((cam hoc) or (cao hoc)) va khanh dinh cuu tre*.