Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
ky tang » ky nang, kho tang, ky trong
ky dang » ky nang, ky danh
hieu ve » hieu va, hieu van
van anh » tuan anh, van minh
hoi cua » hoi chuc
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su cac, su xac
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 sac ((ky tang) or (ky dang)) xa hoi. hieu ve cam xuc ((van anh) OR (van thanh)) hoi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ((ky tang) OR (ky dang)) xa hoi. hieu ve cam xuc ((van anh) OR (van thanh)) hoi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ((ky tang) or (ky dang)) xa hoi. hieu ve cam xuc ((van anh) OR (van thanh)) hoi cua tre".
• Adding a wildcard symbol may retrieve word variants: su sac ((ky tang) or (ky dang)) xa hoi. hieu ve cam xuc ((van anh) OR (van thanh)) hoi cua tre*.