Perhaps you should try some spelling variations:
kho tang » cao tang
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
ky tang » ky nang, ky dang, ky trong
hieu ve » hieu va, hieu van
hoi cua » hoi chuc
cua tre » cua te, cuu tre, cua triet
su cao » cu cao, vu cao, su co
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: su cao ((ky tang) or (kho tang)) xa hoi. hieu ve cam xuc ((van hanh) or (ban hanh)) hoi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cao ((ky tang) OR (kho tang)) xa hoi. hieu ve cam xuc ((van hanh) OR (ban hanh)) hoi cua tre.
• Adding a wildcard symbol may retrieve word variants: su cao ((ky tang) or (kho tang)) xa hoi. hieu ve cam xuc ((van hanh) or (ban hanh)) hoi cua tre*.