Perhaps you should try some spelling variations:
khanh dinh » khanh linh, khanh vinh, hanh dinh
vu khanh » vu thanh, van khanh, duy khanh
dinh cua » dinh cuu, sinh cua, dinh cu
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cao hoc » co hoc, cho hoc, chat hoc
cua tre » cua te, cuu tre, cua triet
tu ban » thu ban, te ban
ban ky » van ky, dan ky
am hoc » ad hoc

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 hoi. hieu ve ((am hoc) or (cao hoc)) vu khanh dinh cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ban ky lang xa hoi. hieu ve ((am hoc) OR (cao hoc)) vu khanh dinh cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ban ky lang xa hoi. hieu ve ((am hoc) or (cao hoc)) vu khanh dinh cua tre*.